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NLE Musculoskeletal NursingMusculoskeletal Assessment and DiagnosticsDetailed Explanation

Detailed explanation of Musculoskeletal Assessment and Diagnostics for the NLE 2026. Full depth, full reasoning — exactly what you need when Professional Regulation Commission (PRC) — Board of Nursing tests this chapter with applied or scenario-based questions in the NLE Musculoskeletal Nursing subtest.

Exam context

The Philippine Nurse Licensure Examination (PNLE) is conducted by Professional Regulation Commission (PRC) — Board of Nursing and is scheduled for Bi-annual. The Musculoskeletal Nursing subtest is marked as "Core" in the official pattern, and Musculoskeletal Assessment and Diagnostics appears in position 1st of 3 in the NLE Musculoskeletal Nursing review rotation. Passing mark: 75% weighted average with no sub-test below 60%. Recent NLE 2026 papers have drawn roughly 50 questions from this subject.

Musculoskeletal Assessment and Diagnostics - Detailed Explanation

Musculoskeletal Nursing is a core component of the Philippine Nursing Licensure Examination (NLE) under NCM 103 (Care of Clients with Physiologic and Psychosocial Alterations, Part A). This chapter covers the systematic assessment of the musculoskeletal system — from functional anatomy to diagnostic studies, cast care, and traction principles. As nurses practicing under Republic Act 9173 (Philippine Nursing Act of 2002), we are responsible for independent and collaborative nursing actions that protect patient safety, prevent complications, and promote recovery. In orthopedic nursing, the most critical safety skill is the neurovascular check, which allows early detection of life-altering complications such as compartment syndrome. Mastery of this chapter is essential not only for the NLE but also for safe clinical practice in Philippine government and private hospitals, rural health units (RHUs), and barangay health centers where musculoskeletal conditions — from falls among elderly Filipinos to work-related injuries among farmers and construction workers — are common presentations.

Concepts

Functional Anatomy of the Musculoskeletal System

The musculoskeletal system is composed of bones, joints, muscles, tendons, ligaments, cartilage, and bursae. Understanding its structure is the foundation of all musculoskeletal assessment. Bone is NOT a dead structure — it is living, vascular tissue that constantly remodels. Two cell types regulate this remodeling: osteoblasts, which BUILD new bone (think 'B' for Build), and osteoclasts, which RESORB or break down old bone (think 'C' for Consume/Clear). This balance is regulated by parathyroid hormone (PTH), calcitonin, and vitamin D. Bone also serves as the primary storage site for calcium and phosphorus — minerals critical for muscle contraction, nerve conduction, and blood clotting. Joints are classified by the degree of movement they permit. Synarthrodial joints are immovable (e.g., sutures of the skull). Amphiarthrodial joints allow slight movement (e.g., intervertebral discs, pubic symphysis). Diarthrodial (synovial) joints are freely movable (e.g., knee, hip, shoulder, elbow) and are the most clinically significant because they are most commonly injured or affected by disease. Synovial joints are lined with articular cartilage and surrounded by a joint capsule with a synovial membrane that produces synovial fluid for lubrication. Supporting soft tissue structures include: Tendons — connect muscle to bone (mnemonic: T connects to Two different things: musTle and Bone). Ligaments — connect bone to bone (both start with 'L' for Ligament-to-bone-to-bone Link). Cartilage — cushions joint surfaces and absorbs shock. Bursae — small fluid-filled sacs that reduce friction between tendons and bony prominences (inflammation of a bursa = bursitis, common in the shoulder and knee).

Examples

Osteoporosis involves an imbalance where osteoclast activity exceeds osteoblast activity, reducing bone density. This is very common among postmenopausal Filipino women who have low calcium and vitamin D intake. The nurse's role includes health education on calcium-rich foods (malunggay, isda with bones, tofu) and fall prevention.

Scenario

A 65-year-old Filipina grandmother presents to the barangay health center with bone pain and was found to have low serum calcium. Her physician suspects osteoporosis.

Solution

Assess dietary calcium and vitamin D intake, review medications (corticosteroids reduce bone density), and anticipate a DEXA scan order to measure bone mineral density.

This is a frequently tested anatomy question. PTH raises serum calcium by stimulating osteoclasts to release calcium from bone, increasing kidney reabsorption of calcium, and activating vitamin D to increase intestinal calcium absorption.

Scenario

In an NLE examination question: Which mineral is primarily stored in bone and regulated by parathyroid hormone?

Solution

Calcium

Applications

  • Explaining to a patient why corticosteroid therapy (used for asthma or lupus, common in Filipino patients) weakens bones over time.
  • Identifying that knee pain after prolonged kneeling (a Filipino cultural practice during prayer or housework) may indicate bursitis.
  • Understanding that bone marrow suppression (e.g., from chemotherapy) impairs hematopoiesis, increasing infection and bleeding risk.
  • Differentiating between a tendon injury (limits muscle movement of a joint) and a ligament sprain (causes joint instability).

Misconceptions

  • Misconception: Bone is dead tissue. FACT: Bone is living, vascular, and constantly remodeling throughout life.
  • Misconception: Tendons and ligaments are the same. FACT: Tendons connect muscle to bone; ligaments connect bone to bone — different structures with different injuries (tendinitis vs. sprain).
  • Misconception: Only elderly people have bone loss. FACT: Young adults with poor calcium intake, eating disorders, or chronic steroid use are also at risk.
  • Misconception: Cartilage heals quickly. FACT: Cartilage is avascular (no blood supply), so it heals poorly and slowly — this is why cartilage injuries are serious.

Related Concepts

  • Calcium and phosphorus metabolism
  • Osteoporosis and osteomalacia
  • Gout (uric acid crystal deposition in joints)
  • Rheumatoid arthritis (synovial membrane inflammation)
  • Hematopoiesis and bone marrow function

Common Exam Questions

Example

Which structure connects muscle to bone? Answer: Tendon.

Approach

Questions often ask you to differentiate tendon from ligament, or to identify the joint classification. Use mnemonics: Tendons = Muscle-to-Bone; Ligaments = Bone-to-Bone.

Question Type

Multiple Choice — Anatomy Identification

Example

A patient taking bisphosphonate therapy. Which bone cell is primarily inhibited by this drug? Answer: Osteoclast.

Approach

Distinguish osteoblast (builds) from osteoclast (resorbs). Questions may involve drug mechanisms (e.g., bisphosphonates inhibit osteoclasts to treat osteoporosis).

Question Type

Multiple Choice — Cell Function

Example

A student nurse explains to a patient that synovial fluid lubricates the joint. Which joint type produces synovial fluid? Answer: Diarthrodial (synovial) joint.

Approach

Apply anatomical knowledge to patient education scenarios, particularly for Filipino elderly with osteoporosis or athletes with sports injuries.

Question Type

Situational — Patient Education

Key Points To Remember

  • Osteoblasts BUILD bone; Osteoclasts RESORB bone — remember 'B' for Build and 'C' for Consume.
  • Bone stores calcium and phosphorus; regulated by PTH (raises calcium), calcitonin (lowers calcium), and vitamin D (increases calcium absorption).
  • Three joint types: Synarthrodial (immovable), Amphiarthrodial (slightly movable), Diarthrodial/Synovial (freely movable).
  • Tendons attach muscle to bone; Ligaments attach bone to bone.
  • Bursae reduce friction; inflammation = bursitis.
  • Bone also performs hematopoiesis (blood cell production) in the red bone marrow — an often-tested function.

Health History and Physical Assessment

A thorough musculoskeletal health history is the first step of the nursing process (Assessment phase). The nurse begins by identifying the chief complaint and using the PQRST framework to characterize any pain: Provocation/Palliation (what makes it worse or better?), Quality (sharp, dull, aching, burning?), Region/Radiation (where is it? Does it spread?), Severity (rate 0–10 on the numeric pain scale), and Timing (when does it occur? Is it constant or intermittent?). Beyond pain, ask about morning stiffness — a hallmark of rheumatoid arthritis (RA) that is worse in the morning and lasts more than 30 minutes — versus osteoarthritis (OA) stiffness, which occurs after inactivity and resolves within 30 minutes. Ask about swelling, deformity, weakness, limited range of motion, and any restrictions in activities of daily living (ADLs). A thorough injury history should include the mechanism of injury (MOI) — for example, a rotational force on the ankle suggests a ligament sprain, while a direct fall on an outstretched hand (FOOSH) commonly causes a Colles' fracture of the wrist. Also assess: occupational hazards (construction workers, farmers), recreational activities (basketball, boxing — common in Filipino males), nutritional intake (calcium, vitamin D, protein), medications (corticosteroids, anticoagulants), and fall history (very important for elderly Filipino patients). Physical assessment follows the sequence: Inspection → Palpation → Movement. ALWAYS compare the affected limb to the opposite unaffected limb. Inspection: Look for swelling, deformity, muscle atrophy (wasting), redness, abnormal posture, and skin changes. Palpation: Feel for tenderness, warmth, crepitus (a grating sensation when a joint or fracture site moves — indicates bone fragments rubbing), effusion (fluid in a joint), and masses. Muscle Strength Testing uses the standard 0–5 scale: 0 = no contraction (complete paralysis), 1 = visible contraction but no movement, 2 = movement with gravity eliminated, 3 = movement against gravity only, 4 = movement against some resistance, 5 = full strength against full resistance (normal). Range of Motion (ROM): Assess ACTIVELY first (patient moves the joint). If the patient cannot, then assess PASSIVELY (examiner moves the joint). NEVER force a joint against pain or resistance. A goniometer measures joint angles in degrees. Key ROM movements: Flexion/Extension (bending/straightening), Abduction/Adduction (away from/toward midline), Internal/External Rotation, Pronation/Supination (forearm). Gait Assessment: Observe the patient walking. The normal gait has two phases: Stance Phase (foot is on the ground, about 60% of the cycle) and Swing Phase (foot moves forward, about 40%). Common abnormal gaits include: Antalgic gait — shortened stance phase on the painful leg to limit weight-bearing (the patient 'limps' away from the pain); Shuffling gait — seen in Parkinson disease; Ataxic gait — wide-based, unsteady, seen in cerebellar or neurological conditions. Always assess fall risk during gait testing and guard the patient closely.

Examples

OA is a degenerative joint disease related to wear-and-tear, common in laborers and elderly patients. RA involves prolonged morning stiffness (>30 min) because of synovial inflammation. Distinguishing these two conditions is a classic NLE question based on health history data.

Scenario

A 45-year-old male construction worker from Manila complains of knee pain for 6 months. He reports stiffness in the morning that goes away after about 20 minutes and worsens after long hours of standing.

Solution

This pattern — stiffness after inactivity that resolves within 30 minutes, worsening with activity — is characteristic of Osteoarthritis (OA), not Rheumatoid Arthritis.

Crepitus is a significant finding that should be documented and reported. It may indicate a fracture with bone fragments, severe osteoarthritis, or cartilage damage. The nurse should NOT continue forcibly moving the joint and should refer to the physician.

Scenario

During physical assessment, the nurse palpates the knee joint of a patient with a sports injury and notes a grating sensation when the knee is flexed and extended.

Solution

This finding is called crepitus, which indicates bone-on-bone contact or cartilage damage.

Applications

  • Using PQRST to assess a patient with low back pain in the emergency department after a vehicular accident.
  • Identifying that a patient whose grip strength is 3/5 (moves against gravity but not resistance) needs a referral to physical therapy.
  • Recognizing an antalgic gait in a post-operative total knee replacement patient and adjusting the ambulation plan accordingly.
  • Educating a Filipino elderly patient (lola) on fall risk during gait assessment at the community health center.

Misconceptions

  • Misconception: Passive ROM should be tested first. FACT: Active ROM is always assessed first to determine what the patient can do independently.
  • Misconception: Crepitus is always normal in elderly patients. FACT: Crepitus is always a significant finding that requires documentation and further evaluation.
  • Misconception: A muscle strength score of 3 means the patient has adequate function. FACT: A score of 3 (movement against gravity only) means significant weakness; the patient cannot perform most ADLs independently.
  • Misconception: Morning stiffness is the same in RA and OA. FACT: The DURATION is the key difference — RA stiffness lasts >30 minutes; OA stiffness resolves quickly with movement.

Related Concepts

  • Rheumatoid Arthritis vs. Osteoarthritis
  • Fall risk assessment (Morse Fall Scale)
  • Activities of Daily Living (ADL) assessment
  • Pain assessment tools (NRS, VAS, Wong-Baker FACES)
  • NANDA nursing diagnosis: Impaired Physical Mobility, Acute Pain, Risk for Falls

Common Exam Questions

Example

A nurse is assessing a patient with a suspected ankle fracture. What is the FIRST action? Answer: Inspect the ankle for deformity, swelling, and skin integrity before palpating.

Approach

NLE questions often ask what to assess FIRST. In musculoskeletal assessment, inspect before palpating, and always compare bilaterally.

Question Type

Priority — First Assessment Step

Example

A patient can raise his arm against gravity but cannot resist the nurse's downward pressure. What is his muscle strength grade? Answer: 4/5.

Approach

Memorize the 0–5 scale. A score of 3 is the critical threshold — it means the patient can move against gravity but needs assistance with ADLs.

Question Type

Interpretation — Muscle Strength

Example

Which finding distinguishes rheumatoid arthritis from osteoarthritis? Answer: Morning stiffness lasting more than 30 minutes (RA) versus stiffness that resolves quickly with movement (OA).

Approach

Focus on the character of stiffness: duration of morning stiffness is the key differentiator.

Question Type

Differentiation — RA vs. OA

Key Points To Remember

  • Use PQRST to assess musculoskeletal pain completely.
  • Morning stiffness >30 minutes = Rheumatoid Arthritis; stiffness after inactivity <30 minutes = Osteoarthritis.
  • Muscle strength scale: 0 = no contraction, 3 = movement against gravity, 5 = normal full strength.
  • Assess ROM actively first; never force a joint through pain.
  • Crepitus = grating sensation = bone-on-bone contact; highly significant finding in fractures or severe OA.
  • Antalgic gait = shortened stance on painful leg — the most common abnormal gait pattern in orthopedic patients.
  • Always compare affected limb to unaffected limb for symmetry.
  • Guard the patient during gait assessment — fall risk is high.

Neurovascular Assessment: The Critical Safety Skill

Neurovascular assessment is the single most important safety skill in orthopedic nursing. It must be performed regularly on any patient with a fracture, cast, splint, traction device, or after orthopedic surgery. The purpose is to detect early signs of impaired circulation and nerve function — most critically, compartment syndrome, a surgical emergency where increased pressure within a closed muscle compartment compromises blood flow and nerve conduction, potentially causing permanent paralysis and tissue death within hours. The neurovascular check is summarized using the 5 Ps (or 6 Ps): 1. PAIN — The EARLIEST and most important warning sign. Key characteristics: increasing in intensity, unrelenting (not relieved by usual analgesics or repositioning), and PAIN ON PASSIVE STRETCH — when you passively flex the patient's fingers or toes and they report severe pain in the forearm or leg respectively, this is a hallmark sign of compartment syndrome. Pain out of proportion to the injury is a critical alert. 2. PALLOR — Assess skin color. Look for pallor (pale), cyanosis (bluish), or duskiness of the skin distal to the injury or cast. Also assess capillary refill: press on the nail bed until it blanches, then release — normal refill is LESS THAN 3 SECONDS. Slow refill indicates poor perfusion. 3. PULSELESSNESS — Assess the distal pulse (radial pulse for upper extremity injuries; dorsalis pedis and posterior tibial pulses for lower extremity injuries). A diminished or absent pulse is a LATE and OMINOUS sign of vascular compromise. By the time the pulse disappears, significant damage may have already occurred. 4. PARESTHESIA — Ask the patient if they feel numbness, tingling, or 'pins and needles' (parang nilalaslas or manhid in Filipino patient communication). This indicates nerve compression or ischemia. 5. PARALYSIS — Inability to move the fingers (for upper extremity) or toes (for lower extremity). This is also a LATE sign. 6. POIKILOTHERMIA (or Perishing Cold) — The affected extremity feels cool or cold to touch compared to the opposite limb, indicating reduced arterial blood flow. Always compare bilaterally — compare the temperature, color, and sensation of the affected limb with the unaffected limb. CRITICAL NURSING ACTION: Any deterioration in neurovascular status — especially increasing pain or paresthesia — must be REPORTED IMMEDIATELY to the physician. Do not wait for the next scheduled assessment. Compartment syndrome requires FASCIOTOMY (surgical incision of the fascia) within hours to prevent permanent damage. Documentation should include: which extremity was assessed, time of assessment, findings for each P, and comparison to baseline.

Examples

Under RA 9173, the nurse has the independent function to assess and the collaborative function to report and advocate. The physician must be notified stat. The splint may need to be bivalved (split) or removed, and an emergent fasciotomy may be required. This is a patient-safety-critical action — delay can lead to Volkmann's ischemic contracture (permanent deformity of the hand/forearm) or loss of limb.

Scenario

A 22-year-old male basketball player was brought to the ER after a collision resulting in a mid-shaft tibial fracture. A splint was applied. Two hours later, he reports severe pain in his lower leg that is 9/10 and is NOT relieved by morphine. The nurse passively dorsiflexes his foot and he screams in pain.

Solution

This is a HIGH PRIORITY situation. These findings — increasing pain out of proportion, unrelieved by narcotics, and severe pain on passive stretch — are the classic early warning signs of compartment syndrome. The nurse must IMMEDIATELY notify the physician.

A cast that is too tight can cause neurovascular compromise by compressing blood vessels and nerves. The physician may order the cast to be bivalved (cut lengthwise) or replaced. The nurse must never wait to see if it improves on its own when neurovascular findings are deteriorating.

Scenario

A post-operative total hip replacement patient has a short-leg cast on the right arm for an unrelated wrist fracture. On assessment, the nurse notes capillary refill of 4 seconds in the right hand and the patient reports tingling in the fingers.

Solution

Capillary refill >3 seconds and paresthesia (tingling) indicate impaired neurovascular status. The nurse must document findings, elevate the limb, and immediately notify the physician. The cast may be too tight.

Applications

  • Post-fracture monitoring in the ER or orthopedic ward — neurovascular checks every 15–30 minutes initially.
  • Monitoring patients in casts or external fixators in the orthopedic unit of Philippine government hospitals.
  • Post-operative assessment after ORIF (Open Reduction Internal Fixation) or total joint replacement.
  • Monitoring patients in Buck's traction or skeletal traction for neurovascular changes.
  • Using findings to formulate NANDA nursing diagnoses: Risk for Peripheral Neurovascular Dysfunction (the primary nursing diagnosis for this situation).

Misconceptions

  • Misconception: Absent pulse is the first sign of compartment syndrome. FACT: Absent pulse is a LATE sign. Pain on passive stretch is the EARLIEST sign.
  • Misconception: If the patient is in pain, it is just normal post-fracture pain. FACT: Pain that increases, is out of proportion to injury, or is unrelieved by narcotics is NEVER normal and always requires reassessment.
  • Misconception: Neurovascular checks only need to be done once per shift. FACT: In acute orthopedic situations, checks may be required every 15–30 minutes. Frequency is based on physician orders and clinical status.
  • Misconception: Compartment syndrome only occurs in legs. FACT: It can occur in any closed muscle compartment — forearm (most common upper extremity site), lower leg (most common lower extremity site), hand, foot, buttock, or thigh.

Related Concepts

  • Compartment syndrome (acute emergency vs. chronic exertional)
  • Volkmann's ischemic contracture (complication of untreated compartment syndrome of the forearm)
  • NANDA: Risk for Peripheral Neurovascular Dysfunction
  • Cast care and traction monitoring
  • Post-operative orthopedic nursing care

Common Exam Questions

Example

A patient with a new arm cast reports increasing pain and tingling in the fingers. Capillary refill is 5 seconds. What is the PRIORITY nursing action? Answer: Immediately notify the physician — this indicates neurovascular compromise requiring urgent intervention.

Approach

When NLE questions describe increasing pain, decreased sensation, or absent pulse in a casted or post-fracture patient, the answer is always IMMEDIATE physician notification. This is Maslow's physiological safety — highest priority.

Question Type

Priority Action — Deteriorating Neurovascular Status

Example

Which finding is the EARLIEST sign of compartment syndrome? Answer: Pain, especially increasing pain on passive stretch of the digits.

Approach

The NLE frequently tests which sign appears FIRST in compartment syndrome. The answer is always PAIN, specifically pain on passive stretch.

Question Type

Identification — Earliest Sign

Example

The nurse assesses capillary refill in a patient with a lower leg fracture. The nail bed takes 4 seconds to return to pink after pressure is released. How should this be interpreted? Answer: This is abnormal (>3 seconds), indicating impaired distal perfusion — requires immediate assessment and reporting.

Approach

Know the normal value (<3 seconds) and what abnormal (>3 seconds) indicates — impaired arterial perfusion.

Question Type

Assessment Technique — Capillary Refill

Key Points To Remember

  • The 6 Ps: Pain, Pallor, Pulselessness, Paresthesia, Paralysis, Poikilothermia (cold).
  • PAIN — especially pain on passive stretch of fingers/toes — is the EARLIEST sign of compartment syndrome.
  • Pulselessness and Paralysis are LATE signs — damage may be irreversible by the time these appear.
  • Normal capillary refill: LESS THAN 3 seconds.
  • ALWAYS compare the affected limb to the opposite unaffected limb.
  • Deterioration in any P = IMMEDIATE physician notification — do not delay.
  • Compartment syndrome is a surgical emergency treated with fasciotomy.
  • Perform neurovascular checks at frequency ordered by physician; typically every 15–30 minutes in the acute phase post-fracture or post-cast application.

Diagnostic Studies in Musculoskeletal Nursing

Understanding diagnostic studies is critical for the NLE because nurses prepare patients for these procedures and implement post-procedure care. Knowing what each test reveals and its specific nursing responsibilities is essential. IMAGING STUDIES: 1. Plain Radiography (X-ray) — The FIRST-LINE study for suspected fractures, dislocations, and bone alignment problems. X-rays show bony structures well but are POOR at visualizing soft tissue (ligaments, tendons, cartilage, muscles). Nursing responsibilities: No special preparation needed. Confirm the patient is NOT pregnant (radiation risk to fetus). Remove all metal objects (jewelry, piercings, bra with metal wire) that would obscure the image. Two views (AP and lateral) are typically taken. 2. Computed Tomography (CT) — Provides detailed cross-sectional images of complex fractures, spinal injuries, and bony tumors. Better detail than plain X-ray. If contrast dye is used: Assess for allergy to iodine, seafood (shellfish), or contrast media. Check renal function (creatinine, BUN) — contrast can cause nephrotoxicity. Ensure adequate hydration before and after. 3. Magnetic Resonance Imaging (MRI) — The BEST study for SOFT TISSUE visualization: ligament tears, tendon injuries, cartilage damage, herniated intervertebral discs, bone marrow tumors, and osteomyelitis (bone infection). It uses magnetic fields and radiofrequency waves — NO radiation. Nursing responsibilities (CRITICAL): Screen for and remove ALL metal. Contraindicated for patients with: certain cardiac pacemakers, cochlear implants, metal surgical clips (especially intracranial), metallic foreign bodies in the eyes. Warn the patient about the enclosed space (claustrophobia — common concern) and the loud banging noise. The procedure takes 30–90 minutes. 4. Bone Scan (Radionuclide Scintigraphy) — A radioactive tracer, technetium-99m (Tc-99m), is injected intravenously. It accumulates in areas of HIGH bone turnover. 'Hot spots' (areas of increased uptake) indicate: tumor (primary or metastatic), osteomyelitis (bone infection), or occult fracture (fracture not visible on plain X-ray). Nursing responsibilities: ENCOURAGE FLUIDS after injection to distribute the tracer and promote renal excretion. Expect a 2–3 HOUR DELAY between injection and actual scanning (tracer needs time to distribute). Reassure the patient that the radioactive dose is very small and safe. 5. DEXA Scan (Dual-Energy X-ray Absorptiometry) — Measures BONE MINERAL DENSITY (BMD). Results reported as a T-score: Normal ≥ -1.0; Osteopenia: -1.0 to -2.5; Osteoporosis ≤ -2.5. Used to screen for and diagnose osteoporosis. No special preparation needed; remove metal. INVASIVE PROCEDURES: 6. Arthroscopy — A fiberoptic scope inserted into a joint (most commonly the knee or shoulder) to visualize, diagnose, biopsy, or repair internal structures (e.g., ACL repair, meniscus repair). Performed under general or regional anesthesia. PRE-PROCEDURE: Verify informed consent (the physician obtains consent; the nurse witnesses and verifies). Keep the patient NPO per anesthesia protocol (typically 8 hours for solid food, 2 hours for clear liquids). POST-PROCEDURE: Assess neurovascular status of the affected extremity. Apply compression dressing and ICE to control swelling and pain. ELEVATE the extremity. Teach the patient to report: increasing pain, fever (sign of infection), excessive swelling, redness/drainage from the incision site. Limit strenuous activity as ordered (typically 2–6 weeks depending on procedure). 7. Arthrocentesis (Joint Aspiration) — Aspiration of synovial fluid from a joint using a needle. Fluid is analyzed for: uric acid crystals (gout — negatively birefringent needle-shaped crystals), bacteria and WBC count (septic arthritis — infection), and blood (hemarthrosis — bleeding into joint from trauma). Also performed therapeutically to relieve pain from joint effusion. LABORATORY TESTS: Serum Calcium — normal 8.5–10.5 mg/dL; elevated in hypercalcemia (bone metastasis, hyperparathyroidism), low in osteomalacia. Alkaline Phosphatase (ALP) — elevated with active bone formation, bone disease (Paget's disease), fracture healing, and bone tumors. ESR (Erythrocyte Sedimentation Rate) and CRP (C-Reactive Protein) — nonspecific markers of inflammation; elevated in RA, osteomyelitis, septic arthritis. Rheumatoid Factor (RF) and Anti-CCP antibodies — elevated in Rheumatoid Arthritis (anti-CCP is MORE specific for RA). Uric Acid — elevated in gout (hyperuricemia). Phosphorus — regulated with calcium; abnormal in metabolic bone diseases.

Examples

Metal objects in an MRI machine can be displaced by the strong magnetic field, potentially causing serious injury or death. Certain newer pacemakers are MRI-conditional, but many older ones are absolute contraindications. This is a critical pre-procedure safety check. Under RA 9173, the nurse has a professional responsibility to ensure patient safety and verify contraindications.

Scenario

A patient is scheduled for MRI of the lumbar spine to assess for a herniated disc. Before the procedure, the nurse interviews the patient and discovers he had cardiac surgery 3 years ago.

Solution

The nurse must determine if the patient has a pacemaker or metal cardiac clips/valves that are MRI-incompatible. This information must be communicated to the radiology team immediately before proceeding.

Patient education is an independent nursing function under RA 9173. Encouraging fluid intake helps distribute the tracer evenly and promotes renal excretion after the scan, reducing radiation exposure time. This is a commonly tested nursing intervention for bone scans in the NLE.

Scenario

A 55-year-old Filipina is scheduled for a bone scan to rule out bone metastasis from breast cancer. She asks why she has to wait 3 hours after the injection before the actual scan.

Solution

Explain that the radioactive tracer (technetium-99m) needs time to travel through the bloodstream and accumulate in areas of high bone turnover. During the waiting period, encourage her to drink plenty of fluids to help distribute the tracer throughout the body.

Applications

  • Pre-procedure screening checklist before MRI (metal screening, claustrophobia assessment, pregnancy test for females of childbearing age for X-ray/CT).
  • Post-arthroscopy nursing care in the PACU (Post-Anesthesia Care Unit) of a Philippine tertiary hospital.
  • Interpreting laboratory results to correlate with musculoskeletal diagnoses (elevated uric acid → gout, elevated RF + anti-CCP → RA).
  • Educating a patient awaiting a bone scan at the Philippine General Hospital (PGH) Nuclear Medicine unit.

Misconceptions

  • Misconception: MRI is always better than CT. FACT: CT provides BETTER bone detail for complex fractures; MRI is better for SOFT TISSUE. Each has its specific indication.
  • Misconception: A bone scan uses large amounts of radiation. FACT: The dose of radioactive tracer (Tc-99m) is very small and is excreted from the body within 24–48 hours. It is considered safe.
  • Misconception: X-ray can show torn ligaments. FACT: X-rays only show BONE. Ligament tears, cartilage damage, and soft tissue injuries require MRI for visualization.
  • Misconception: NPO means the patient should not eat or drink anything for 24 hours before arthroscopy. FACT: Standard NPO guidelines allow clear liquids up to 2 hours before anesthesia and solid food up to 8 hours before — follow anesthesiologist orders specifically.

Related Concepts

  • Radiation safety and pregnancy (first trimester highest risk)
  • Contrast-induced nephropathy (CT with contrast)
  • Gout and hyperuricemia management
  • Rheumatoid arthritis serological markers
  • DEXA scan and osteoporosis screening (DOH Philippines guidelines for postmenopausal women)

Common Exam Questions

Example

A patient scheduled for an MRI tells the nurse she has a cochlear implant. What is the PRIORITY nursing action? Answer: Notify the physician and radiology department immediately — cochlear implants are typically a contraindication to MRI.

Approach

Always think METAL for MRI contraindications. Screen for pacemakers, cochlear implants, metal implants, and piercings. This is a patient safety priority.

Question Type

Pre-procedure Safety — MRI Contraindications

Example

After injection of technetium-99m for a bone scan, the nurse should: Answer: Encourage the patient to drink plenty of fluids and inform them the scan will begin in 2–3 hours.

Approach

Two key interventions: encourage fluids (to distribute tracer and promote excretion) and inform the patient about the 2–3 hour waiting period.

Question Type

Nursing Intervention — Bone Scan

Example

Immediately after returning from arthroscopy of the knee, the PRIORITY nursing assessment is: Answer: Neurovascular assessment of the affected extremity (circulation, sensation, and movement distal to the surgical site).

Approach

Use ABC prioritization — post-procedure neurovascular check comes first, then compression, ice, and elevation. Teach patient to report fever (infection sign).

Question Type

Post-procedure — Arthroscopy

Key Points To Remember

  • X-ray = first-line for fractures and bone alignment; poor for soft tissue.
  • MRI = BEST for soft tissue (ligaments, cartilage, discs, bone marrow); screen for ALL metal before MRI.
  • Bone scan: inject Tc-99m IV → wait 2–3 hours → scan. Encourage fluids. Hot spots = tumor, infection, or fracture.
  • DEXA T-score: Normal ≥-1.0; Osteopenia -1.0 to -2.5; Osteoporosis ≤-2.5.
  • Arthroscopy: NPO pre-procedure; post-procedure = neurovascular check, compression, ice, elevation.
  • Arthrocentesis: analyzes synovial fluid for crystals (gout), bacteria (infection), or blood (trauma).
  • ALP elevated = active bone disease or healing. RF + Anti-CCP elevated = Rheumatoid Arthritis. Uric acid elevated = Gout.
  • CT with contrast: check for allergy to iodine/shellfish and assess renal function.

Principles of Cast Care

Casts are rigid immobilization devices used to: maintain fracture alignment during healing, protect injured bones and soft tissues, and provide stability after orthopedic surgery. Types of Casts: PLASTER casts — made of plaster of Paris (calcium sulfate). Heavier and takes 24–72 hours to fully dry/cure. During the drying period, the cast generates HEAT (an exothermic reaction — normal and expected; reassure the patient). Advantages: molds better to body contours, less expensive. Disadvantages: heavy, not water-resistant. FIBERGLASS casts — made of polyurethane resin. Lighter and dries in approximately 30 minutes. Water-resistant. More expensive. Most commonly used today in Philippine hospitals. Nursing Care of a New (Wet) Cast: 1. SUPPORT WITH PALMS — When handling a fresh wet plaster cast, always use the PALMS of the hands, not the fingertips. Fingertips create indentations (dents) in the wet cast that, when hardened, create pressure points on the underlying skin — leading to skin breakdown and pressure ulcers. 2. ALLOW TO AIR DRY — Do NOT cover the wet cast with blankets or plastic. Do not use a hair dryer or heating lamp (uneven drying causes the cast to become brittle and crack). Elevate the casted extremity and allow air to circulate. 3. ELEVATE — Elevate the casted extremity ABOVE HEART LEVEL for the first 24–48 hours to reduce swelling and prevent further neurovascular compromise. Use pillows. 4. APPLY ICE — Apply ice bags wrapped in cloth (never directly on cast) over the first 24–48 hours to reduce swelling and pain. 5. NEUROVASCULAR CHECKS — Perform frequent neurovascular assessments of the digits distal to the cast. 6. CAST MONITORING — After the cast dries, monitor for: Hot spots — a localized area of warmth on the cast surface that may indicate infection or pressure ulcer beneath. Foul odor — indicates tissue breakdown or infection under the cast. Drainage — if drainage appears on the cast surface, CIRCLE THE DRAINAGE OUTLINE with a pen and write the DATE and TIME. Monitor if drainage is spreading. Report significant increases. Pressure ulcer signs — the patient may report increasing pain at a specific spot under the cast. 7. NEVER INSERT OBJECTS — Teach the patient NEVER to insert anything (pencil, ruler, chopstick) into the cast to scratch itching skin. This breaks the skin integrity and introduces bacteria, risking infection. Instead, recommend gentle tapping on the outside of the cast, a hair dryer on cool setting, or anti-itch medications. 8. KEEP CAST CLEAN AND DRY — Protect the cast from moisture (especially plaster). Cover with a plastic bag when showering. 9. PATIENT EDUCATION — Teach to report: increasing pain, numbness or tingling (paresthesia), skin changes at cast edges (maceration, sores), swelling that does not resolve with elevation, cast cracking or breaking. Specific Cast Types: Short arm cast (SAC) — wrist/forearm fractures. Long arm cast (LAC) — elbow/forearm fractures. Short leg cast (SLC) — ankle fractures. Long leg cast (LLC) — tibia/fibula fractures. Spica cast — hip or shoulder involvement; requires special positioning and log-rolling technique.

Examples

Fingertip pressure on a wet plaster cast creates dents or indentations. As the cast hardens, these indentations become hard internal pressure points that press against the underlying skin, causing ischemia and pressure ulcers. This is a classic NLE question on cast handling technique.

Scenario

A student nurse caring for a patient with a fresh plaster arm cast is about to reposition the cast on a pillow. She positions her hands with fingers spread, resting only the fingertips on the cast.

Solution

This is INCORRECT technique. The student nurse should be corrected immediately — the cast should be supported using the PALMS of both hands, not the fingertips.

A hot spot is a localized area of warmth indicating inflammation or infection beneath the cast. Foul odor suggests tissue breakdown or bacterial infection. This is a reportable finding that requires medical evaluation — the nurse cannot independently remove a cast but must advocate for the patient promptly.

Scenario

A patient with a right tibial fracture in a long leg cast returns to the orthopedic clinic 3 days after discharge. She reports a bad smell coming from the cast and a constant itch with a 'hot feeling' in one spot near the top of the cast.

Solution

These findings — foul odor, localized heat (hot spot), and persistent itching — indicate a possible pressure ulcer or infection developing under the cast. The nurse must notify the physician, who may order a cast window (cutting a window in the cast to inspect the skin) or cast removal.

Applications

  • Orthopedic ward nursing care for patients in short arm or long leg casts after fracture ORIF.
  • Patient discharge teaching for outpatient cast management at the Philippine General Hospital fracture clinic.
  • Community health nursing — monitoring cast patients during home visits.
  • Preventing pressure ulcers (a National Patient Safety Goal) in immobilized patients.

Misconceptions

  • Misconception: Heat from a new plaster cast indicates infection. FACT: Heat during the first hours of a plaster cast is from the normal exothermic drying reaction — it is expected and temporary.
  • Misconception: Fiberglass casts can always get wet. FACT: While fiberglass is water-resistant, the padding underneath can become wet and harbor bacteria. Unless specifically ordered a 'waterproof cast,' patients should keep the cast dry.
  • Misconception: If drainage circles are small, they are not concerning. FACT: ANY new drainage should be circled, dated, and monitored for increase. Progressive spread of drainage is always concerning and must be reported.
  • Misconception: A cast can be removed by the nurse if it seems too tight. FACT: Cast removal requires a physician order and is performed with a cast saw by trained personnel.

Related Concepts

  • Pressure ulcer prevention (Braden Scale, repositioning, skin inspection)
  • Cast bivalving (splitting the cast to relieve pressure)
  • Cast removal technique and bivalving
  • Compartment syndrome prevention and detection
  • NANDA: Impaired Skin Integrity, Risk for Impaired Skin Integrity, Impaired Physical Mobility

Common Exam Questions

Example

A patient has a fresh plaster cast applied to the forearm. How should the nurse handle the cast? Answer: Support it with the palms of the hands, not the fingertips, to prevent indentations that create pressure points.

Approach

The NLE tests proper technique. PALMS = correct; fingertips = incorrect. This is straightforward but frequently appears in the exam.

Question Type

Technique — Handling a Wet Cast

Example

A patient reports that the area under her arm cast 'smells bad' and has a 'warm spot.' The priority nursing action is: Answer: Notify the physician immediately — these signs indicate possible skin breakdown or infection under the cast.

Approach

When a patient reports increasing pain, paresthesia, or a hot spot, the nurse must ASSESS (neurovascular check) and REPORT. Prioritize physiological safety.

Question Type

Priority Action — Cast Monitoring

Example

The nurse evaluates patient teaching about cast care. Which statement indicates that teaching was UNSUCCESSFUL? Answer: 'I will use a ruler to scratch my skin under the cast when it itches' — this is UNSAFE and indicates the patient needs re-education.

Approach

Education questions assess if the patient UNDERSTANDS cast care. Look for safe behaviors (keeping cast dry, elevating the limb) vs. unsafe behaviors (inserting objects).

Question Type

Patient Education

Key Points To Remember

  • Support wet plaster cast with PALMS, never fingertips — to prevent indentations that cause pressure ulcers.
  • Plaster dries in 24–72 hours; fiberglass dries in ~30 minutes.
  • Plaster cast generates HEAT while drying — this is NORMAL; reassure the patient.
  • Elevate casted extremity above heart level for 24–48 hours post-application.
  • Circle drainage on cast with date and time to monitor for spread.
  • Hot spot + foul odor + drainage under cast = likely infection or pressure ulcer beneath.
  • NEVER insert objects into a cast for scratching — risk of skin breakdown and infection.
  • Teach patient to report: increasing pain, paresthesia, cast damage, or swelling not relieved by elevation.

Principles of Traction

Traction is the application of a sustained pulling force to a body part to: reduce (realign) a fracture, maintain fracture alignment, relieve muscle spasm and pain, prevent or correct deformities, and immobilize a joint after injury or surgery. Types of Traction: 1. SKIN TRACTION — The pulling force is applied THROUGH THE SKIN using adhesive strips, foam boots, or bandages attached to weights. Common example: BUCK'S TRACTION — a short-term skin traction applied to the lower leg using a foam boot or adhesive straps, with weights typically 2–3.5 kg (5–8 lbs). Used pre-operatively for hip fractures to reduce pain and muscle spasm while awaiting surgery. Also used for low back pain or hip pain management. Limitations: Maximum weight is limited (skin cannot tolerate heavy weights); short-term use only (skin breakdown risk). 2. SKELETAL TRACTION — The pulling force is applied DIRECTLY TO THE BONE through a surgically inserted metal pin, wire, or tong (e.g., Steinmann pin or Kirschner wire through the distal femur or tibia; skull tongs for cervical spine injuries). Allows heavier weights and longer-term use. Main complication: PIN-SITE INFECTION (osteomyelitis risk). Nursing Care for ALL Traction (Traction Principles): 1. MAINTAIN THE PULL — Weights must HANG FREELY at all times. Never allow weights to rest on the floor, on the bed frame, or on any surface. Never remove or lift weights without a physician's order (removing weights removes the therapeutic force). 2. MAINTAIN ALIGNMENT — The patient must be kept in proper anatomical alignment. The body acts as COUNTERTRACTION (the opposing force). Prevent the patient from sliding to the foot of the bed (use the overhead trapeze). Keep the traction ropes in line with the pull force (straight line from the body part to the pulley). 3. ENSURE ROPES ARE ON PULLEYS — Check that the ropes are properly seated on the pulleys and that knots are tight and not frayed. Knots must not touch the pulleys (would interfere with the pull). 4. PIN-SITE CARE (for skeletal traction) — Perform pin-site care using ASEPTIC TECHNIQUE per physician order and hospital protocol. Typically involves cleaning around each pin with normal saline or chlorhexidine, then applying a sterile dressing. Assess pin sites for signs of infection: redness, warmth, swelling, purulent drainage, and LOOSENING of the pin (pin loosening in infected bone is an ominous sign). 5. NEUROVASCULAR CHECKS — Assess the affected extremity for the 6 Ps at regular intervals. 6. SKIN CARE — For skin traction, assess skin under the boot/straps for pressure sores. For all traction, perform regular pressure injury prevention measures (pad bony prominences, reposition as able, use pressure-redistribution mattress). 7. COMPLICATIONS OF IMMOBILITY — Traction requires prolonged bed rest, which risks: Pressure ulcers (especially sacrum, heels, occipital area), Deep Vein Thrombosis (DVT) — prophylaxis with anticoagulants (heparin) and compression stockings, Constipation (encourage fluids, high-fiber diet, stool softeners), Pneumonia/Atelectasis (encourage deep breathing and coughing exercises, incentive spirometry), Urinary tract infection (adequate hydration, proper perineal hygiene), Muscle wasting and contractures (range of motion exercises for unaffected joints), Depression and sensory deprivation (therapeutic communication, diversional activities). Under RA 9173, the nurse's independent functions include all of these preventive and monitoring activities — proactive care of the immobilized patient is a core nursing responsibility.

Examples

When weights rest on any surface, the pulling force is lost, defeating the purpose of traction. In Buck's traction for hip fractures, loss of countertraction increases muscle spasm and pain and can worsen fracture displacement. This is a common scenario in both clinical practice and NLE examination questions.

Scenario

A 70-year-old patient with a right femoral neck fracture is placed in Buck's traction pre-operatively. During rounds, the nurse notices the traction weight is resting on the bed frame because the patient slid down toward the foot of the bed.

Solution

This is a critical problem — weights must HANG FREELY to maintain the therapeutic pull. The nurse must: (1) Reposition the patient up in bed (using the trapeze and assistance), (2) Ensure the weight is hanging freely again, and (3) Check neurovascular status and patient comfort.

Pin-site infection is the most serious complication of skeletal traction because it can lead to osteomyelitis (bone infection), which is difficult to treat and may require surgical debridement. Prevention through meticulous aseptic pin-site care is the nurse's primary responsibility. This is a patient-safety-critical intervention.

Scenario

A patient in skeletal traction via a Steinmann pin through the tibia develops redness and purulent drainage around the pin site on day 5 of traction.

Solution

These findings indicate a pin-site infection. The nurse must: document findings (site, character of drainage, temperature), notify the physician immediately, culture the drainage as ordered, and continue aseptic pin-site care. The physician may order antibiotics or pin removal.

Applications

  • Pre-operative care of patients with hip fractures in Buck's traction in Philippine tertiary hospitals.
  • Management of patients in skeletal traction for femoral shaft fractures in the orthopedic ward.
  • Preventing immobility complications (DVT prophylaxis protocols, deep breathing exercises) in traction patients.
  • Patient and family education about why weights must not be removed or touched.

Misconceptions

  • Misconception: The nurse can temporarily lift or remove traction weights for patient comfort. FACT: Weights must NEVER be removed or adjusted without a physician's order. Removing weights eliminates the therapeutic force.
  • Misconception: Buck's traction is the same as skeletal traction. FACT: Buck's is SKIN traction (attached to skin, light weights); skeletal traction goes through bone via a pin (heavier weights, direct bone attachment).
  • Misconception: Pin-site infections are minor and will resolve on their own. FACT: Pin-site infections can progress to osteomyelitis (bone infection), a serious condition requiring aggressive antibiotic treatment or surgical intervention.
  • Misconception: Patients in traction cannot exercise. FACT: Patients in traction can and SHOULD exercise unaffected limbs and perform isometric exercises to prevent muscle atrophy and DVT.

Related Concepts

  • DVT and pulmonary embolism prophylaxis
  • Pressure ulcer staging and prevention
  • Immobility complications and interventions
  • Skeletal traction devices (Steinmann pin, Kirschner wire, Gardner-Wells tongs)
  • Buck's traction nursing care
  • NANDA: Impaired Physical Mobility, Risk for Infection, Risk for DVT

Common Exam Questions

Example

The family member of a patient in traction lifts the weights to help the patient reposition. The nurse's PRIORITY action is: Answer: Immediately lower the weights to restore the therapeutic pull and educate the family not to touch the traction weights.

Approach

When the NLE asks about traction problems, the answer usually involves maintaining the pull (weights hanging freely) or not removing weights without an order. These are the most commonly tested traction principles.

Question Type

Priority — Traction Maintenance

Example

The nurse is performing pin-site care for a patient in skeletal traction. The most important principle in pin-site care is: Answer: Maintaining aseptic technique to prevent infection.

Approach

Recognize the signs of infection (redness, warmth, purulent drainage, fever) at the pin site and understand aseptic technique as the primary prevention.

Question Type

Complication — Pin-Site Infection

Example

Which nursing intervention is the highest priority for a patient on bed rest in skeletal traction? Answer: Assessing for deep vein thrombosis and implementing DVT prophylaxis (anticoagulant therapy as ordered, compression stockings, dorsiflexion exercises).

Approach

For traction patients, prioritize DVT prevention (highest mortality risk), pressure ulcer prevention, and respiratory complications. Use Maslow's hierarchy — physiological needs first.

Question Type

Complication Prevention — Immobility

Key Points To Remember

  • Skin traction (Buck's traction): through skin, light weights, short-term, used for pre-op hip fractures.
  • Skeletal traction: through bone pin, heavier weights, long-term, risk of PIN-SITE INFECTION.
  • WEIGHTS MUST HANG FREELY — never touch the floor or bed; never remove without an order.
  • Maintain countertraction — the patient's body weight provides the counter-force; prevent foot-of-bed slipping.
  • Aseptic pin-site care for skeletal traction; assess for infection signs (redness, drainage, loosening).
  • Prevent immobility complications: DVT, pressure ulcers, pneumonia, constipation, UTI.
  • Ropes must be properly seated on pulleys; knots must not contact pulleys.
  • The patient in traction can use an overhead trapeze to assist with repositioning.

Assistive Devices and Gait Training

After musculoskeletal injury or orthopedic surgery, patients frequently need assistive devices to ambulate safely while protecting the injured limb. Nurses reinforce physical therapy teachings and assess safe use during ambulation. The three main assistive devices are crutches, walkers, and canes. CRUTCHES: Proper Fitting: When the patient stands upright, the axillary pad should be 2–3 finger-widths (approximately 5 cm or 2 inches) BELOW the axilla. The handgrip should be at wrist level (when the arm is at the side with slight elbow flexion). WEIGHT MUST BE BORNE ON THE HANDS AND WRISTS — NEVER ON THE AXILLA. If the patient leans on the axillary bar, the radial nerve (specifically the posterior cord of the brachial plexus) can be compressed, causing 'crutch palsy' — weakness or paralysis of the wrist extensors (wrist drop). Crutch Gaits: THREE-POINT GAIT: Used when ONE leg cannot bear weight at all (non-weight-bearing status). Sequence: Both crutches and the affected leg advance forward together (as a tripod unit), then the STRONG (unaffected) leg swings through. This is the most common gait after lower extremity fractures, ankle sprains, or post-operative procedures. FOUR-POINT GAIT: Used when BOTH legs can bear some weight. Sequence: Right crutch → Left foot → Left crutch → Right foot (alternating pattern). Slowest but most stable gait. TWO-POINT GAIT: Faster version of the four-point gait. Sequence: Right crutch and left foot together → Left crutch and right foot together. Both gaits (4-point and 2-point) are for partial weight-bearing patients. STAIR CLIMBING with Crutches — The golden rule: 'UP WITH THE GOOD, DOWN WITH THE BAD': Going UP stairs: The STRONG (unaffected) leg leads first up to the step, then the crutches and affected leg follow. Memory aid: 'Good goes to heaven first (goes up first).' Going DOWN stairs: The CRUTCHES and the AFFECTED (weak) leg go down first, then the STRONG leg follows. Memory aid: 'Bad goes to the ground first (goes down first).' WALKER: Provides the greatest stability of all assistive devices. Best for elderly patients and those with balance problems. Technique: Lift and advance the walker forward, place all four legs on the ground, then step into the walker (do not step TOO FAR into it — center of gravity must stay within the walker frame). Rolling walkers require slightly different instruction. CANE: Held on the STRONG (unaffected) side — the OPPOSITE side from the injury or weak leg. Rationale: When the cane is on the strong side, it advances with the weak leg. As the weak leg steps forward, the cane provides lateral support and reduces the load on the weak side. The handle should be at hip level (greater trochanter height). Fitting is correct when the elbow is at about 15–30 degrees of flexion. Memory aid: 'Cane with the CANE-ot side' — hold it on the side that CAN support you (the strong side).

Examples

Chronic pressure on the axilla from improper crutch use compresses the radial nerve, causing crutch palsy — manifesting as weakness in wrist extension (wrist drop) and decreased sensation over the dorsum of the hand. This is a preventable iatrogenic complication that the nurse must prevent through proper instruction and return demonstration.

Scenario

A patient with a right ankle fracture (non-weight-bearing) has been fitted with crutches. The nurse observes the patient walking with the crutch pads in direct contact with the axilla (armpit), leaning his full body weight on the pads.

Solution

INCORRECT and dangerous technique. The nurse must correct this immediately: instruct the patient to bear weight on the hands (handgrips), keep the crutch pads 2–3 finger-widths below the axilla, and keep elbows slightly flexed.

The cane on the strong side advances with the weak leg. This biomechanical relationship distributes weight away from the operated knee, reducing pain and providing stability. Holding the cane on the weak side is ineffective and potentially unsafe. This is a classic NLE question on assistive device use.

Scenario

A patient with a left total knee replacement (partial weight-bearing) is being taught to use a cane. She picks it up in her LEFT hand (the same side as the surgery).

Solution

INCORRECT. The cane should be in the RIGHT hand (the unaffected, strong side). The nurse should demonstrate the correct technique and have the patient perform a return demonstration before discharge.

Applications

  • Post-operative rehabilitation teaching after total knee or hip replacement in a Philippine rehabilitation center.
  • Discharge education for a patient with an ankle fracture going home on crutches from a rural district hospital.
  • Fall prevention programs in elderly care facilities — proper cane and walker instruction.
  • Reinforcing physical therapy instructions during orthopedic ward rounds.

Misconceptions

  • Misconception: The cane should be held on the SAME side as the weak or injured leg. FACT: The cane is ALWAYS held on the STRONG, unaffected side to provide lateral support during the swing of the weak leg.
  • Misconception: Leaning on the axillary crutch pad is acceptable for rest. FACT: Leaning on the axilla — even briefly — can compress the radial nerve and lead to crutch palsy (wrist drop).
  • Misconception: Going UP stairs, the crutches should go first. FACT: Going UP, the STRONG leg goes first; crutches go second. Going DOWN, crutches and affected leg go first.
  • Misconception: A walker is better than crutches for all patients. FACT: The appropriate device depends on the patient's condition, weight-bearing status, upper extremity strength, and cognitive ability. Walkers require good upper extremity strength and coordination.

Related Concepts

  • Crutch palsy (radial nerve compression)
  • Weight-bearing status classifications (NWB, TTWB, PWB, WBAT, FWB)
  • Fall risk assessment and prevention strategies
  • Physical therapy and rehabilitation nursing
  • NANDA: Impaired Walking, Risk for Falls

Common Exam Questions

Example

When fitting a patient for crutches, the nurse checks that there is a 2–3 finger-width space between the axillary pad and the axilla. This is to: Answer: Prevent compression of the brachial nerve (radial nerve), which causes crutch palsy.

Approach

The NLE tests correct measurement. The key measurement is 2–3 finger-widths (5 cm) between the axillary pad and the axilla.

Question Type

Assessment — Correct Crutch Fit

Example

A patient with a non-weight-bearing left leg fracture is going up stairs with crutches. Which leg should go up the stairs first? Answer: The RIGHT (unaffected, strong) leg.

Approach

Memorize: UP with the GOOD, DOWN with the BAD. This is one of the most commonly tested NLE orthopedic nursing items.

Question Type

Gait Training — Stair Climbing

Example

A patient with right-sided hip weakness is being taught to use a cane. In which hand should the cane be held? Answer: Left hand (the unaffected, stronger side).

Approach

The cane always goes on the STRONG side. If an NLE question describes a patient holding the cane on the weak/affected side, that is always INCORRECT.

Question Type

Device Selection — Cane Use

Key Points To Remember

  • Crutch pad should be 2–3 finger-widths (5 cm) BELOW the axilla — never ON the axilla.
  • Weight on HANDS, not axilla — axillary leaning causes crutch palsy (radial nerve compression, wrist drop).
  • Three-point gait: for NON-weight-bearing; both crutches + affected leg advance, then strong leg swings through.
  • Stairs with crutches: UP with the GOOD (strong leg first up), DOWN with the BAD (crutches + affected leg first down).
  • Cane is held on the STRONG side, advances with the WEAK leg.
  • Walker: provides MOST stability; advance walker, place all legs down, then step into it.
  • Four-point gait: alternating pattern, both legs bear weight, most stable crutch gait.
  • Two-point gait: faster than four-point, also for partial weight-bearing.

Practice Problems

This scenario presents the classic signs of ACUTE COMPARTMENT SYNDROME: (1) Increasing, unrelenting pain out of proportion to the injury and unrelieved by narcotics, (2) Severe pain on PASSIVE STRETCH (dorsiflexion of the foot stretches the anterior tibial compartment muscles), (3) Pallor, (4) Capillary refill >3 seconds (impaired perfusion), (5) Paresthesia (tingling = early nerve ischemia). This is a surgical emergency requiring FASCIOTOMY within hours to prevent permanent muscle and nerve damage. The nurse must immediately notify the physician, document all assessment findings with the time, stay with the patient, prepare for potential emergent fasciotomy, and avoid elevating the limb above heart level (elevation reduces arterial inflow and worsens ischemia in compartment syndrome). Under RA 9173, this constitutes both the nurse's independent function (assessment and reporting) and collaborative function (physician notification and preparation for intervention). Memorize: In compartment syndrome, DO NOT elevate — this is the OPPOSITE of routine fracture care.

Problem

A patient is admitted after sustaining a closed fracture of the right tibia during a motorcycle accident. A plaster cast is applied in the ER. Four hours later, the patient reports that the pain is now 10/10 and getting worse despite IV morphine. The nurse passively dorsiflexes the right foot, and the patient screams in severe pain. Assessment reveals pallor of the right toes, capillary refill of 5 seconds, and tingling in all toes. What is the PRIORITY nursing action?

Solution

The PRIORITY nursing action is to IMMEDIATELY notify the physician of findings that indicate compartment syndrome.

The radioactive tracer (Tc-99m) requires 2–3 hours to circulate throughout the bloodstream and accumulate in areas of high bone turnover (hot spots). If the scan is performed too soon, the tracer will not have had sufficient time to localize, resulting in a non-diagnostic study. During the waiting period, the nurse should: (1) Encourage oral hydration (fluids help distribute the tracer evenly and promote renal excretion after the scan, reducing radiation exposure time), (2) Reassure the patient that the dose of radioactivity is very small and safe, (3) Instruct the patient to void before the scan (a full bladder may obscure pelvic bone images and cause discomfort during the scan). This is a commonly tested NLE nursing intervention for bone scan procedures.

Problem

The nurse is preparing a 60-year-old postmenopausal woman with back pain for a bone scan to rule out vertebral metastasis from known breast cancer. She received the injection of technetium-99m 30 minutes ago and asks: 'Can I go for the scan now? I've been waiting a long time.' What should the nurse tell the patient?

Solution

Inform the patient that she needs to wait approximately 2–3 hours after the injection before the scan can be performed. Encourage her to drink plenty of fluids during the waiting period.

Wet plaster is pliable and moldable. Fingertips exert concentrated point pressure that creates indentations (dents) in the wet cast. As the plaster hardens over the next 24–72 hours, these dents become hard internal protrusions that press against the underlying skin. This leads to: (1) Localized pressure injury (pressure ulcer) beneath the cast, manifesting as a 'hot spot' on the cast surface, foul odor, and persistent pain at the site, (2) Potentially progressing to full-thickness skin breakdown, infection, and osteomyelitis. The CORRECT technique is to use the PALMS of both hands to support the entire cast surface, distributing pressure evenly and preventing indentations. This is a patient-safety-critical technique and is frequently tested in NLE practical application questions.

Problem

A student nurse is repositioning a patient with a fresh right arm plaster cast. A supervising nurse observes the student holding the cast with both hands, placing only the fingertips on the cast surface as she moves it to a pillow. What error is being made, and what are the potential consequences?

Solution

The error is supporting the wet plaster cast with FINGERTIPS instead of PALMS. The consequence is creation of pressure points inside the cast.

In Buck's traction (skin traction), the pulling force must be continuous and unobstructed. When the weight rests on the footboard: (1) The therapeutic pull is lost, (2) Muscle spasm returns (causing increased hip pain), (3) Fracture alignment may be disrupted. Nursing interventions: (1) Instruct the patient to use the overhead trapeze and assist with repositioning upward in bed (restoring countertraction with body weight), (2) Ensure the traction weight is hanging freely off the foot of the bed, (3) Verify the rope is properly seated on the pulley with no knots touching the pulley, (4) Reassess the patient's pain level and neurovascular status, (5) Document the situation and the actions taken. Note: Weights must NEVER be removed or added without a physician's order. If the patient needs to be moved off the bed (e.g., for transport or surgery), this requires a physician's order to briefly maintain manual traction or release traction.

Problem

A patient with a left hip fracture is placed in Buck's traction pre-operatively. The nurse enters the room and observes the following: the traction weight (3 kg) is resting on the footboard of the bed because the patient slid downward; the patient is complaining of increased left hip pain. Identify the problems and describe the correct nursing interventions.

Solution

Problem: The traction weight is NOT hanging freely (resting on footboard), which eliminates the therapeutic pulling force. Interventions: (1) Reposition the patient up in bed. (2) Ensure the weight hangs freely.

ERROR 1 CORRECTION: Weight must be borne on the HANDGRIPS, not the axillary pads. The axillary pads rest lightly against the chest wall for stability only. Bearing weight on the axilla compresses the radial nerve (posterior cord of the brachial plexus), causing CRUTCH PALSY — manifested as wrist drop, weakness in wrist and finger extension, and decreased sensation over the dorsum of the hand and thumb. The space between the axillary pad and axilla should be 2–3 finger-widths (5 cm). ERROR 2 CORRECTION: The rule for stairs is 'UP WITH THE GOOD, DOWN WITH THE BAD.' Going DOWN stairs: The CRUTCHES and AFFECTED (right) leg go DOWN first to the lower step, then the STRONG (left) leg follows. The patient was doing the OPPOSITE (going down with the good leg first, which is actually the pattern for going UP stairs). Re-educate and have the patient perform another return demonstration before being cleared for independent ambulation.

Problem

A nurse is teaching a patient with a right ankle fracture (non-weight-bearing status) to use axillary crutches. During the return demonstration, the nurse observes: (a) The patient bears weight on the axillary pads while walking, and (b) Going down the stairs, the patient leads with the right (unaffected) leg. Identify both errors and explain the correct techniques.

Solution

Error 1: Bearing weight on axillary pads instead of hand grips. Error 2: Leading with the unaffected leg going DOWN stairs (should lead with crutches and affected leg).

Post-arthroscopy, the priority assessment is NEUROVASCULAR STATUS of the affected extremity — assess circulation (capillary refill, skin color, pulse), sensation (paresthesia), and movement of the toes. This is the highest-priority action because arthroscopy carries risk of neurovascular injury from positioning, tourniquet use, or swelling. FIRST INTERVENTIONS: (1) Complete neurovascular assessment (assess and document all 6 Ps), (2) Apply compression dressing (reduces bleeding and edema) and ICE (wrapped in cloth; apply over the dressing to reduce swelling and pain; do not apply ice directly to skin), (3) ELEVATE the right lower extremity above heart level (reduces swelling by promoting venous and lymphatic drainage). Additional nursing actions: Monitor for signs of infection at the port sites (redness, drainage, fever). Provide analgesics as ordered. Educate the patient to report: increasing pain, fever >38°C, excessive swelling, or wound drainage. Limit weight-bearing and strenuous activity as per orthopedic surgeon orders. This post-procedure care bundle is frequently tested in NLE situational questions.

Problem

A post-arthroscopic knee surgery patient has just returned to the ward from the recovery room 45 minutes after a right knee arthroscopy for meniscal repair. What are the nurse's PRIORITY assessment and FIRST three interventions?

Solution

PRIORITY: Neurovascular assessment of the right lower extremity. INTERVENTIONS: (1) Assess 6 Ps of neurovascular status, (2) Apply compression dressing and ice, (3) Elevate the extremity.

Exam Preparation Tips

  • PRIORITIZE the 6 Ps of neurovascular assessment — this is the most commonly tested topic in musculoskeletal nursing NLE questions. Memorize that PAIN (especially pain on passive stretch) is the EARLIEST sign of compartment syndrome, while pulselessness and paralysis are LATE signs.
  • Use the mnemonic '3Ps for Timing' — PAIN first (early), Pallor + Paresthesia (middle), Pulselessness + Paralysis (late, ominous). Any deterioration = IMMEDIATE physician notification.
  • Master the cast care rules: PALMS (not fingertips) for wet plaster, ELEVATE 24–48 hours, CIRCLE and date drainage, NO objects inserted, report hot spots and foul odor. These generate multiple NLE situational questions.
  • For traction: the non-negotiable rules are WEIGHTS HANG FREELY (never on floor/bed) and NEVER remove without order. Skeletal traction = aseptic pin-site care. Buck's traction = skin traction for pre-op hip fractures.
  • Memorize the crutch gait stair rules as a phrase: 'Up with the GOOD, Down with the BAD.' For the cane: STRONG side. For axilla weight-bearing: NEVER — it causes crutch palsy (radial nerve compression, wrist drop).
  • Know your diagnostic study correlations: X-ray = bone, MRI = soft tissue (and SCREEN ALL METAL), Bone scan = hot spots mean tumor/infection/fracture (give fluids, wait 2–3 hours), DEXA = T-score for osteoporosis (≤-2.5 = osteoporosis).
  • For arthroscopy questions: PRE = NPO + consent; POST = neurovascular check FIRST, then compression + ice + elevation + teach to report fever.
  • Distinguish RA from OA using morning stiffness DURATION: RA = >30 minutes (prolonged); OA = resolves quickly (<30 min) with activity. This appears in health history interpretation questions.
  • Use NANDA nursing diagnoses in your clinical reasoning: Risk for Peripheral Neurovascular Dysfunction (compartment syndrome prevention), Impaired Physical Mobility (cast/traction), Risk for Falls (gait assessment), Risk for Infection (pin sites), and Acute Pain (fractures).
  • Apply Maslow's hierarchy for prioritization: Physiological safety comes first. When a patient has signs of neurovascular compromise (compartment syndrome, DVT), this takes priority over comfort, education, or psychosocial needs.
  • Remember the RA 9173 context: Assessment and monitoring are INDEPENDENT nursing functions. Reporting to the physician, modifying cast/traction, and performing fasciotomy are COLLABORATIVE functions. Know where your scope of practice lies.
  • For DEXA scan T-scores: practice these thresholds — Normal ≥ -1.0; Osteopenia = -1.0 to -2.5; Osteoporosis ≤ -2.5. Bisphosphonates (inhibit osteoclasts) and calcium + vitamin D supplementation are standard osteoporosis treatments.
  • When answering NLE situations involving a patient in traction who needs repositioning or the family who touched the weights, the answer is always: restore the weights to hanging freely AND educate the family. Safety first, then teaching.
  • Practice bilateral comparison in neurovascular assessment: 'compare with the opposite limb.' This phrase signals correct assessment technique in NLE options.
  • For the Philippine context: remember that corticosteroid use is common in Filipino patients (for asthma, lupus, rheumatoid arthritis) and significantly increases osteoporosis risk — this is a common NLE scenario combining pharmacology and musculoskeletal nursing.
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In summary

Musculoskeletal Assessment and Diagnostics is one of the highest-yield chapters for the Philippine Nursing Licensure Examination. The core competency the NLE tests repeatedly is the nurse's ability to DETECT deterioration early and RESPOND appropriately — this is embodied in the neurovascular assessment using the 6 Ps. Under Republic Act 9173, Filipino nurses are accountable for independent nursing functions including assessment, monitoring, patient education, and preventive care — all of which are central to orthopedic nursing. The chapter's key messages are: First, know your anatomy — understanding that tendons attach muscle to bone, ligaments attach bone to bone, and that osteoblasts build while osteoclasts resorb, gives you a foundation for understanding every musculoskeletal condition. Second, master the neurovascular check — Pain on passive stretch is the EARLIEST and most critical warning of compartment syndrome. Never minimize pain that is increasing, out of proportion, or unrelieved by narcotics. Third, understand your diagnostics — X-ray for bone, MRI for soft tissue (and always screen for metal), bone scan requires fluid encouragement and a 2–3 hour wait, DEXA measures bone density. Fourth, apply safe cast and traction principles consistently — palms not fingertips for wet casts, weights that always hang freely in traction, aseptic pin-site care for skeletal traction. Fifth, teach assistive device safety — cane on the strong side, crutch weight on the hands, and the 'up with the good, down with the bad' stair rule are patient safety imperatives that appear repeatedly in the NLE. As future nurses serving Filipino patients in tertiary hospitals, district hospitals, rural health units, and community settings across the Philippines, your musculoskeletal assessment skills will directly impact patient outcomes. Whether you are caring for a farmer with a tibial fracture at a provincial hospital, an elderly lola with a hip fracture at a barangay health center, or a young athlete with an ACL tear at a sports medicine clinic — the nursing process, professional standards under RA 9173, and the clinical knowledge in this chapter will guide your practice toward safety, competence, and excellence.

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