NLE Musculoskeletal Nursing — Musculoskeletal Assessment and DiagnosticsStudy Notes

The musculoskeletal system is a living, dynamic structure that serves multiple functions: providing body structure and support, protecting vital organs, enabling movement, storing minerals (particularly calcium and phosphorus), and producing blood cells through hematopoiesis in bone marrow. Understanding this anatomy is essential before performing assessment. **BONE STRUCTURE AND FUNCTION** Bone is not a static structure but living, vascular tissue that constantly undergoes remodeling. This process is orchestrated by two key cell types: • **Osteoblasts**: Bone-building cells that synthesize and deposit new bone matrix during growth and healing. These cells are active in areas of fracture repair and in response to mechanical stress. • **Osteoclasts**: Bone-resorbing cells that break down and remove old or damaged bone, facilitating the remodeling process and releasing calcium into the bloodstream when blood levels drop. Bone mineral composition includes **calcium** and **phosphorus**, which are regulated by three hormones: 1. **Parathyroid hormone (PTH)**: Increases serum calcium by promoting osteoclast activity and renal reabsorption of calcium 2. **Calcitonin**: Decreases serum calcium by inhibiting osteoclasts 3. **Vitamin D**: Promotes calcium absorption from the GI tract and works synergistically with PTH In the Philippine setting, malnutrition and vitamin D deficiency are common public health concerns affecting bone health, particularly in rural and low-income populations. Nurses must assess dietary calcium and vitamin D intake as part of musculoskeletal health screening. **JOINT CLASSIFICATION AND STRUCTURE** Joints are classified by their degree of movement using a three-category system: • **Synarthrodial joints (immovable)**: Include skull sutures and the joints between vertebral bodies in certain regions. These provide structure and protection but no functional movement. • **Amphiarthrodial joints (slightly movable)**: Include intervertebral discs and the joints between ribs and vertebrae. These allow limited movement while maintaining stability. • **Diarthrodial or synovial joints (freely movable)**: Include the knee, hip, shoulder, elbow, wrist, and ankle. These are the joints most frequently injured and requiring assessment. Synovial joints have a specialized structure: - **Articular cartilage**: A smooth, hyaline cartilage layer covering bone ends that reduces friction and allows smooth movement - **Synovial membrane**: Lines the joint capsule and secretes synovial fluid, a clear, viscous lubricant that nourishes cartilage (which is avascular) and reduces friction - **Joint capsule**: Fibrous connective tissue that encloses the joint - **Ligaments**: Strong, fibrous connective tissue that attaches bone to bone, providing joint stability - **Tendons**: Attach muscle to bone, transmitting the force of muscle contraction to move joints - **Bursae**: Fluid-filled sacs positioned over bony prominences and between tendons and bone that reduce friction during movement. Inflammation of a bursa (bursitis, e.g., subacromial bursitis in the shoulder) is a common clinical presentation in the Philippines, often related to occupational stress. Cartilage is an avascular tissue that depends on synovial fluid diffusion and joint movement for nutrition. Immobility leads to cartilage degradation, which is why early mobilization is critical in musculoskeletal rehabilitation.

A thorough musculoskeletal health history establishes baseline function, identifies risk factors for disease and injury, and guides focused physical examination. This aligns with Level II nursing practice under RA 9173, where the RN conducts comprehensive patient assessment. **CHIEF COMPLAINT AND PAIN CHARACTERIZATION** Begin by establishing the reason for seeking care. If pain is the presenting complaint, use the **PQRST mnemonic** to fully characterize it: • **Provocation/Palliation**: What triggered the pain? What relieves it? (e.g., "Pain started after lifting a heavy bag; relieved by rest") • **Quality**: Ask the patient to describe the pain—is it sharp, dull, aching, burning, throbbing, or radiating? • **Region/Radiation**: Where is the pain located? Does it radiate to other areas? (e.g., lower back pain radiating to the leg suggests nerve involvement) • **Severity**: Use a 0–10 numerical rating scale; ask about functional impact ("On a scale of 0–10, how severe is your pain, and how does it affect your daily activities?") • **Timing**: Is the pain constant or intermittent? Does it follow a pattern? (e.g., worse in the morning before activity in osteoarthritis, or worse after activity in rheumatoid arthritis) **ASSOCIATED SYMPTOMS** Expand the history by asking about: • **Stiffness**: Characterize duration and timing. Morning stiffness lasting more than 30 minutes is classic for rheumatoid arthritis, while stiffness improving with activity suggests osteoarthritis. In the Philippine context, many patients work in agriculture or informal labor with repetitive motions, predisposing them to joint stiffness. • **Swelling (edema)**: Note which joints and whether swelling is bilateral (suggests systemic disease) or unilateral (suggests local injury or infection). • **Deformity**: Ask if the patient has noticed changes in joint shape or body alignment. • **Weakness**: Clarify whether weakness is in a specific muscle group or more generalized; weakness may indicate neurological involvement, muscular disease, or disuse atrophy. • **Limitations in activities of daily living (ADL)**: "Can you dress yourself? Walk stairs? Perform your job?" These functional assessments guide rehabilitation planning. • **Locking or catching**: Mechanical symptoms suggest internal derangement (e.g., meniscal tear in the knee). • **Clicking or popping (crepitus)**: May indicate cartilage damage or tendon subluxation. **MECHANISM OF INJURY** For acute presentations, obtain a detailed injury history: - What was the patient doing when injured? - Was there a fall? If so, from what height and onto what surface? Falls are a leading cause of injury in Philippine hospitals, particularly in geriatric patients in community settings. - Was there direct impact or twisting? - Did the patient hear or feel a "pop" or "snap"? - What was the immediate response (could the patient bear weight, move the joint)? **OCCUPATIONAL AND RECREATIONAL DEMANDS** The type and nature of work significantly influence musculoskeletal health: • Ask about the patient's occupation and whether it involves repetitive motions, heavy lifting, prolonged standing, or awkward postures. In the Philippines, many patients work in agriculture, construction, domestic work, or factory labor—all high-risk for musculoskeletal injury. • Document recreational activities and sports participation. • Ask about the ability to perform work duties and any work-related restrictions. **FALL HISTORY** For older adults or patients with neurological disease, inquire about falls: - How many falls in the past 12 months? - Circumstances of falls (at home, in workplace, on stairs)? - Any injuries from falls? - What are the perceived causes (dizziness, weakness, tripping)? Fall prevention is a critical public health priority in the Philippines, particularly in urban geriatric populations and in rural areas with limited home safety modifications. **NUTRITIONAL HISTORY** Assess intake of calcium and vitamin D: • "How many servings of dairy products (milk, cheese, yogurt) do you eat per day?" (In the Philippines, dairy consumption is lower than in Western countries, increasing osteoporosis risk.) • "How much time do you spend in the sun without sunscreen?" (Vitamin D is synthesized in skin with sun exposure.) • "Do you take any vitamin or mineral supplements?" • Ask about dietary restrictions (e.g., lactose intolerance, vegetarian diet) that may limit calcium intake. **MEDICATION HISTORY** Certain medications significantly affect bone health: • **Corticosteroids** (e.g., oral prednisone, dexamethasone): Long-term use suppresses osteoblast activity and accelerates bone loss, increasing fracture risk. Ask about duration and dose. • **Anticoagulants** (e.g., warfarin, heparin, direct oral anticoagulants): Increase bleeding risk if musculoskeletal trauma occurs; relevant for pre-operative assessment. • **Anticonvulsants**: May affect vitamin D metabolism. • **Bisphosphonates**: Used to treat osteoporosis; ask about adherence and side effects (e.g., osteonecrosis of the jaw is a rare but serious complication). • Other medications: NSAIDs, muscle relaxants, biologics for rheumatoid arthritis. **PAST MEDICAL HISTORY** Document conditions affecting musculoskeletal health: - Arthritis (rheumatoid arthritis, osteoarthritis, gout) - Osteoporosis or osteopenia - Metabolic disorders (hyperthyroidism, hyperparathyroidism) - Neurological disorders (stroke, Parkinson disease, peripheral neuropathy) - Renal disease (affects vitamin D metabolism and calcium regulation) - Diabetes (affects wound healing, increases fracture risk despite normal bone density) - Malignancy (risk for bone metastases) - Previous fractures or orthopedic surgery

Musculoskeletal physical examination follows a systematic, comparative approach. The guiding principle is always to **compare the affected side with the unaffected (contralateral) side** to identify abnormalities. Assessment proceeds from inspection to palpation to movement testing. **INSPECTION** Inspection is performed with the patient undressed or in minimal clothing to visualize the entire body region. Observe for: • **Swelling (edema)**: Note location (localized or diffuse), appearance (pitting or non-pitting), and whether it is unilateral or bilateral. Swelling in one joint suggests local pathology (trauma, infection, crystal arthropathy); bilateral swelling suggests systemic disease (rheumatoid arthritis). In the Philippine setting, assess whether swelling is related to occupational demands (e.g., swelling in hands of laundry workers) or systemic disease. • **Deformity**: Look for abnormal alignment, angulation, or rotation. Examples include: - **Bowlegs (genu varum)**: Inward bowing of the legs; common in the Philippines due to nutritional rickets in children - **Knock-knees (genu valgum)**: Outward angulation at the knees - **Kyphosis**: Excessive forward curvature of the thoracic spine; seen in advanced osteoporosis or ankylosing spondylitis - **Lordosis**: Excessive inward curvature of the lumbar spine - **Scoliosis**: Lateral curvature of the spine - **Joint deformities**: In rheumatoid arthritis, you may observe ulnar deviation, swan-neck deformity, or boutonniere deformity of the fingers • **Muscle atrophy**: Compare muscle bulk on affected and unaffected sides. Atrophy develops rapidly with disuse (even within 1–2 weeks of immobility) and indicates muscle weakness. Measure thigh circumference at a standard location (e.g., 10 cm above the patella) to document quantitative change. • **Redness (erythema) and warmth**: Over a joint or bone suggests inflammation or infection. Palpate to confirm warmth. • **Skin changes**: Note bruising (ecchymosis), which indicates recent trauma; scars from previous surgery; open wounds; or rashes (relevant in systemic diseases like systemic lupus erythematosus or Lyme disease, though Lyme disease is not endemic to the Philippines). • **Abnormal posture**: Assess standing posture from front, back, and side. Document any asymmetry, protective positioning (e.g., holding an arm against the body in shoulder injury), or splinting (deliberate immobility to protect an injured part). **PALPATION** Palpate systematically, using a gentle yet firm pressure, comparing sides. • **Tenderness**: Elicit by gently pressing over bones, joints, and surrounding soft tissues. Ask the patient to point out areas of maximal pain. Tenderness localized to bone suggests fracture or periostitis (bone inflammation); tenderness in joint spaces suggests arthritis or effusion; tenderness over muscles or tendons suggests muscle strain or tendinitis. • **Warmth**: Palpate for increased warmth, which indicates inflammation or active disease. Compare with the opposite side using the back of your hand (more sensitive to temperature than fingertips). • **Swelling and effusion**: Palpate to confirm swelling and assess whether an effusion (fluid in a joint) is present. For the knee, perform the ballottement test: with the knee extended, push the patella sharply downward; if an effusion is present, the patella will "bounce" back upward when you release pressure. • **Crepitus**: A grating or grinding sensation felt during palpation or movement. Types include: - **Crepitus from bone fracture**: A coarse, painful crepitus from bone fragments rubbing together; never intentionally elicit this as it is painful and may displace fragments - **Crepitus from osteoarthritis**: A fine crepitus from irregular cartilage surfaces rubbing together - **Crepitus from tenosynovitis**: Palpable crepitus along a tendon sheath, suggesting inflammation • **Masses**: Any palpable lumps, nodules, or masses. Document size, location, consistency (hard, soft, mobile, fixed), and whether painful. In rheumatoid arthritis, firm nodules (rheumatoid nodules) may be palpated over bony prominences or extensor surfaces. • **Pulses**: Palpate distal pulses (radial, ulnar, dorsalis pedis, posterior tibial) to assess distal perfusion. A diminished or absent pulse is an ominous sign of vascular compromise and must be reported immediately. • **Temperature and color**: Assess extremities for pallor, cyanosis, or mottled appearance, comparing sides. Cool extremities suggest poor perfusion. **RANGE OF MOTION (ROM)** ROM assessment measures how far a joint can move in different directions. ROM is foundational to detecting joint limitations and guiding rehabilitation. **Active Range of Motion (AROM)** Ask the patient to move the joint through its full available range without assistance. AROM reflects: - Joint structure integrity - Muscle strength - Patient cooperation and pain tolerance - Neurological control **Passive Range of Motion (PROM)** The examiner gently moves the joint through its range without the patient's muscular effort. PROM indicates: - Intrinsic joint structure - Capsular and ligament integrity - Presence of mechanical blockage **Important principle**: Never force a joint against resistance or through pain. Forceful movement can cause further injury, especially in acute injury or after surgery. If ROM is limited, note the point at which movement stops: - **Hard stop**: Abrupt, unyielding limit (suggests bone blockage) - **Soft stop**: Gradual resistance from soft tissue (suggests muscle tightness or effusion) - **Spring-back**: Partial recoil after passive stretch (suggests muscle guarding) **Movements Assessed at Major Joints** Each joint permits specific movements. Use standard terminology: • **Flexion**: Decreases the angle between two bones; bending movement • **Extension**: Increases the angle; straightening movement • **Abduction**: Movement away from the midline of the body • **Adduction**: Movement toward the midline • **Internal (medial) rotation**: Rotating toward the midline • **External (lateral) rotation**: Rotating away from the midline • **Pronation**: Rotating the forearm so the palm faces downward • **Supination**: Rotating the forearm so the palm faces upward • **Circumduction**: Circular movement combining flexion, abduction, extension, and adduction (seen at ball-and-socket joints like the shoulder and hip) **Measurement** A **goniometer** is a simple protractor-like instrument that measures joint angles in degrees. It has a fixed arm, a movable arm, and a center pivot point. To use: 1. Place the center pivot at the joint's axis of motion 2. Align the fixed arm with one bone 3. Align the movable arm with the other bone 4. Read the angle between the arms Normal ROM values (in degrees) for major joints include: - Shoulder flexion: 0–180° - Shoulder abduction: 0–180° - Elbow flexion: 0–150° - Hip flexion: 0–120° - Hip abduction: 0–45° - Knee flexion: 0–135° - Ankle dorsiflexion: 0–20° - Ankle plantarflexion: 0–50° If precise measurement is not available, document ROM descriptively (e.g., "ROM limited to 90 degrees of knee flexion" or "full AROM in both knees"). **Causes of Limited ROM** Understanding the cause guides intervention: - **Pain**: Patient voluntarily limits movement to avoid pain; may improve with analgesia or ice - **Effusion (joint swelling)**: Excess synovial fluid mechanically limits movement; elevate and apply ice to reduce - **Contracture**: Permanent shortening of muscle or ligament due to prolonged immobility; requires sustained stretching and early mobilization - **Mechanical blockage**: Loose bone fragment, meniscal tear, or other internal derangement; may require surgery - **Spasticity**: Hypertonicity in patients with central nervous system injury (e.g., stroke, spinal cord injury); managed with stretching, positioning, and sometimes antispasticity medications

Gait assessment evaluates the patient's ability to walk and identifies abnormal patterns that may indicate underlying musculoskeletal, neurological, or cardiopulmonary disease. As a Level II RN, you must assess gait safely while protecting the patient from falls. **PHASES OF NORMAL GAIT** Normal gait alternates between two phases: **Stance Phase** (60% of gait cycle) - The foot is in contact with the ground - Body weight is transferred from one leg to the other - The leg provides support against gravity - Muscles work to stabilize the pelvis and trunk **Swing Phase** (40% of gait cycle) - The foot leaves the ground - The leg swings forward in preparation for the next stance - The opposite leg maintains stability **ASSESSMENT OF NORMAL GAIT** Observe the patient walking a distance of at least 10 meters (one hallway length). Document: • **Base of support**: Normal base is narrow (feet approximately hip-width apart). A widened base suggests balance impairment or neurological disease (e.g., ataxia). • **Stride length**: Distance covered in one complete gait cycle (right heel strike to next right heel strike). Stride should be symmetrical; shortened stride on one side suggests pain or weakness on that side. • **Arm swing**: Normal arm swing is rhythmic and reciprocal (right arm swings forward with left leg). Loss of arm swing on one side suggests neurological disease (e.g., stroke) or pain-related guarding. • **Cadence**: Walking speed should be steady and consistent. Slow, shuffling gait may indicate pain, weakness, or neurological disease. • **Posture and trunk stability**: Trunk should remain upright with minimal lateral sway. • **Foot placement**: Feet should land heel-first, progressing to toe-off. Toe-first placement suggests spasticity or foot drop. • **Symmetry**: Movement should be symmetrical between sides; asymmetry suggests unilateral pathology. **COMMON ABNORMAL GAIT PATTERNS** Recognizing abnormal patterns guides diagnosis and intervention: **Antalgic Gait** (literally, "pain-avoiding gait") - The patient shortens the stance phase on the painful limb to minimize weight-bearing on that side - The patient may lean toward the affected side during stance to unload the painful leg - **Cause**: Pain from any source (fracture, arthritis, muscle strain, plantar fasciitis) - **Example**: A patient with acute ankle sprain favors the uninjured leg and uses short steps on the injured side - **Nursing intervention**: Pain management, ice/elevation, crutches or walker to reduce weight-bearing as appropriate **Ataxic Gait** (cerebellar or sensory ataxia) - Wide base of support with unsteady, irregular steps - Trunk sways markedly - Patient may appear drunk or uncoordinated - **Cause**: Cerebellar disease, alcohol intoxication, peripheral neuropathy, posterior column disease, or vestibular dysfunction - **Nursing intervention**: Assist with ambulation, fall precautions, environmental safety **Parkinsonian Gait** (hypokinetic gait) - Stooped posture with forward flexion of the trunk - Slow, shuffling steps with reduced arm swing (often absent) - Difficulty initiating gait ("freezing") - Difficulty stopping; patient may accelerate forward (festinating gait) - **Cause**: Parkinson disease or other basal ganglia disorders - **Nursing intervention**: Allow time for initiation, assist with turns, fall precautions **Spastic Gait** (hyperkinetic gait) - Legs held in rigid extension or slight flexion with crossed appearance (scissors gait) - Feet scrape along the ground (toe-first contact) - Arm on affected side may be flexed with reduced swing - **Cause**: Spinal cord injury, cerebral palsy, stroke with hemiplegia - **Nursing intervention**: ROM exercises, positioning, stretching to prevent contracture **Steppage Gait** (foot drop gait) - The patient lifts the knee higher than normal to clear the drooping foot - Slapping sound as the foot hits the ground (loss of heel-first contact) - **Cause**: Peripheral neuropathy, peroneal nerve injury, foot drop from any cause - **Nursing intervention**: Ankle-foot orthosis (AFO) to support the foot, physical therapy **Trendelenburg Gait** - Pelvis drops on the side of the swinging leg (instead of remaining level) - The trunk may lean toward the stance-leg side to compensate - **Cause**: Weakness of hip abductors (gluteus medius) on the stance side, hip pain, or hip joint disease - **Nursing intervention**: Assess hip strength, pain management, gait training with appropriate assistive device **SAFETY DURING GAIT ASSESSMENT** Always prioritize patient safety: • **Guard the patient**: Position yourself close to the patient, especially if there is fall risk. Be ready to support the patient if balance is lost. • **Use appropriate assistive devices**: Ensure crutches, walker, or cane are available and properly fitted before assessment. • **Ensure clear pathway**: Remove obstacles, ensure adequate lighting, and assess environmental hazards. • **Assess for dizziness or fatigue**: Ask the patient how they feel and stop if symptoms develop. • **Document use of devices**: Note whether the patient uses a walker, cane, crutches, or orthosis, and whether they use them correctly. **DOCUMENTATION OF GAIT** Document systematically: - "Patient ambulates independently without assistive device; gait is steady and symmetrical; stride length equal bilaterally; normal arm swing; able to walk full hallway length without difficulty." - "Patient ambulates with walker for safety; gait is slow and shuffling with stooped posture; arm swing diminished on left side; requires contact guard due to fall risk." **FALL RISK ASSESSMENT** Gait abnormalities increase fall risk, particularly in older adults and in those with neurological disease. In the Philippine setting, many older adults live in homes with stairs and uneven surfaces, increasing fall hazard. Document fall risk and implement interventions (assistive devices, environmental modification, supervision, physical therapy).

Neurovascular assessment is the most patient-safety-critical skill in musculoskeletal nursing. Any patient with a fracture, cast, splint, traction, or recent orthopedic surgery requires frequent, systematic neurovascular checks of the affected extremity to detect the earliest signs of compartment syndrome, deep vein thrombosis (DVT), or other perfusion emergencies. Early detection allows prompt intervention to prevent permanent disability or limb loss. **WHY NEUROVASCULAR CHECKS ARE CRITICAL** When a bone fractures, soft tissue is damaged. Swelling (edema) develops rapidly as fluid accumulates in damaged tissues. The fascia (tough connective tissue surrounding muscles) is inelastic, so swelling increases pressure within the compartment. If pressure rises above capillary perfusion pressure (normally about 30 mmHg), blood flow stops, tissues become ischemic, and permanent damage begins within hours. This is **compartment syndrome**, a medical emergency. Additionally, immobility after fracture or surgery increases risk of deep vein thrombosis (DVT), a life-threatening condition. Neurovascular checks are how nurses detect these emergencies early, when intervention can save limbs and lives. Under RA 9173, this is a critical nursing responsibility. **THE FIVE (OR SIX) Ps OF NEUROVASCULAR ASSESSMENT** Neurovascular status is traditionally assessed using the **"5 Ps"** (some sources cite 6, with **Poikilothermia** as the 6th). These are listed roughly in order of earliest to latest appearance: **1. PAIN (Earliest sign — appears first)** Assess pain carefully and in detail: • **Increasing pain**: Pain that is worsening over time, especially pain that is **out of proportion to the injury** or does not respond to appropriate analgesia, is the **single earliest and most sensitive** warning sign of compartment syndrome. • **Unrelenting pain**: Pain that persists despite rest, elevation, ice, and appropriate analgesia is ominous. • **Pain on passive stretch**: This is particularly important. Passively stretch the muscles in the affected compartment by extending the fingers or toes (e.g., if the patient has a leg cast, passively extend the toes to stretch the calf muscles; if the patient has an arm cast, passively extend the fingers). **Pain with passive stretch is highly sensitive for compartment syndrome** and must be reported immediately. This occurs before other signs appear. • **Report immediately**: Do NOT wait to see other signs of compartment syndrome. A patient with severe pain, especially pain on passive stretch of the fingers or toes, requires immediate physician notification, possible imaging (CT or compartment pressure measurement), and urgent fasciotomy (surgical decompression) if compartment syndrome is confirmed. **2. PALLOR (Pale or dusky color)** Assess skin color: • Compare the affected extremity with the unaffected side. Look for pallor (pale, whitish appearance) or cyanosis (bluish, dusky appearance). • **Mechanism**: Pallor indicates severe vasoconstriction from pain and sympathetic stimulation; cyanosis indicates deoxygenation from reduced blood flow. • **Assessment technique**: Blanch the fingernail or toenail bed (press the nail, then release; it should return to pink within 3 seconds — **capillary refill time**). Delayed capillary refill (>3 seconds) or persistent pallor/cyanosis indicates poor perfusion. • **Context**: Pallor and cyanosis are **late signs**, appearing after pain and paresthesia. They indicate significant vascular compromise. **3. PULSELESSNESS (Absent or diminished distal pulses)** Palpate pulses distal to the injury: • **Upper extremity**: Palpate the radial and ulnar pulses in the wrist; dorsalis pedis (top of foot) and posterior tibial (behind the medial malleolus) pulses in the leg. • **Strength and character**: Describe pulses as normal/strong, diminished/weak, or absent. Note whether the pulse is regular or irregular, bounding or thready. • **Bilateral comparison**: Always compare the affected side with the unaffected side. A diminished or absent pulse on the affected side compared to the opposite side is abnormal. • **Context**: Absent or severely diminished pulses are a **late and ominous sign**, indicating severe vascular compromise. This is an emergency requiring immediate intervention. **4. PARESTHESIA (Abnormal sensation: numbness or tingling)** Assess sensation systematically: • **Method**: Using a fingertip or cotton ball, lightly touch the fingers or toes distal to the injury. Ask the patient, "Can you feel this? Does it feel normal?" Ask the patient to close their eyes so they cannot see where you are touching. • **Numbness**: Loss of sensation or decreased sensation compared to the opposite side indicates nerve ischemia. Nerves are very sensitive to ischemia and become dysfunctional early, so paresthesia is an **early sign** and should be taken seriously. • **Tingling or "pins and needles"**: This sensation (dysesthesia) also indicates nerve irritation or ischemia. • **Specific nerves**: - **Upper extremity**: If the patient has median nerve involvement (e.g., from carpal tunnel syndrome or wrist injury), sensation is lost in the thumb and first two fingers. Ulnar nerve involvement affects the 4th and 5th fingers. Radial nerve involvement affects the dorsal hand (back of hand between thumb and index finger). - **Lower extremity**: Deep peroneal nerve involvement causes loss of sensation on the dorsum of the foot (between the 1st and 2nd toes). Superficial peroneal nerve involvement affects the lateral foot. Tibial nerve involvement affects the sole of the foot. • **Action**: Paresthesia requires investigation and monitoring. If accompanied by pain, it strongly suggests compartment syndrome. **5. PARALYSIS (Inability to move the digits or limb)** Assess motor function: • **Method**: Ask the patient to move the fingers or toes (flex and extend each digit). Observe for movement and grade strength (0–5 scale). • **Weakness or inability**: Any loss of motor function indicates nerve ischemia. Motor loss is a **late sign** and indicates severe compromise. Permanent nerve damage may occur if not quickly reversed. • **Example**: A patient with a leg fracture should be able to flex and extend all toes. If the patient cannot move the great toe or reports weakness, this is abnormal and requires immediate reporting. **6. POIKILOTHERMIA (Coolness of the affected part)** Assess temperature: • **Method**: Palpate the affected extremity with the back of your hand and compare with the opposite side. The affected part should be warm and similar in temperature to the unaffected side. • **Coolness**: A cool extremity compared to the opposite side indicates reduced blood flow (vasoconstriction or decreased perfusion). • **Context**: Coolness is a **late sign** of vascular compromise. **SUMMARY OF TIMING OF THE Ps** From earliest to latest appearance: 1. **Pain** (especially pain on passive stretch) — **EARLIEST** 2. **Paresthesia** — EARLY 3. **Pallor/Pulselessness** — LATE 4. **Poikilothermia** — LATE 5. **Paralysis** — **LATEST** and indicates irreversible damage may be occurring **ALSO ASSESS FOR: EXCESSIVE SWELLING** Beyond the 6 Ps, assess for **excessive edema**: • Measure extremity circumference (e.g., calf or arm circumference) at a marked location and compare to the opposite side. An increase of >1 cm compared to the baseline or opposite side is significant. • Palpate for pitting edema (pressing leaves an indentation that slowly refills). • Excessive swelling, especially if rapidly progressive, indicates increased compartment pressure and risk of compartment syndrome. **FREQUENCY AND DOCUMENTATION OF NEUROVASCULAR CHECKS** **Frequency**: - **Immediately after fracture, casting, or surgery**: Every 15–30 minutes for the first few hours - **First 24–48 hours**: Every 1–2 hours - **Days 3–7**: Every 4 hours or per hospital protocol - **After initial period**: Once daily or per protocol, unless signs of deterioration appear - **Any time pain increases or other concerning signs appear**: Check immediately **Documentation**: Document all findings in a clear, systematic way: "**Neurovascular check, right leg (post-fracture, day 1, 1400 hours):** - **Pain**: Reports 6/10 in right calf; denies pain on passive toe extension - **Pallor**: Skin color pink, capillary refill <3 sec bilaterally - **Pulselessness**: Dorsalis pedis pulse palpable and strong bilaterally; equal strength - **Paresthesia**: Sensation intact in dorsum of foot, sole of foot; no numbness or tingling reported - **Paralysis**: Able to flex and extend all toes bilaterally with full strength - **Poikilothermia**: Right foot warm, temperature equal to left foot - **Edema**: Right calf circumference 38 cm (left calf 36 cm, 2 cm difference from baseline); minimal pitting edema - **Assessment**: Neurovascular status intact; normal findings; continue q2h checks" **ABNORMAL FINDINGS — IMMEDIATE ACTION** If you detect ANY of the following, **report to the physician immediately**: • Severe pain, especially pain **out of proportion** to the injury or pain **not relieved by analgesia** • **Pain on passive stretch** of the fingers or toes • Numbness, tingling, or loss of sensation • Pallor, cyanosis, or slow capillary refill (>3 sec) • Diminished or absent pulse • Inability to move fingers or toes • Cool extremity • Rapidly increasing swelling despite elevation and ice • Any deterioration in neurovascular status from previous checks **DO NOT WAIT.** Compartment syndrome is a surgical emergency. Delaying diagnosis or treatment results in permanent nerve and muscle damage, potentially leading to limb loss, chronic pain, or loss of function. **SPECIAL CONSIDERATIONS** **In pediatric patients**: - Children may have difficulty reporting pain or sensation; use play-based assessment techniques - A child's behavior change (increased irritability, refusing to move the extremity) may indicate pain - Compliance with assessment is important; make it part of routine care and involve the child **In patients with altered consciousness** (sedation, intubation, coma): - Rely on objective findings: color, temperature, swelling, pulses, and ability to move digits - Assessment is more challenging; more frequent checks are warranted - Any abnormal objective finding requires immediate reporting **In patients with dark skin**: - Pallor may be subtle; look for loss of normal skin tone or an ashen appearance - Cyanosis is difficult to detect; look for color changes in nail beds, lips, or mucous membranes - Capillary refill timing is reliable regardless of skin color **In patients on anticoagulants**: - Watch for ecchymosis (bruising), which may expand if bleeding continues into tissues - Expanding bruising increases compartment pressure and risk of compartment syndrome **COMPARISON WITH THE OPPOSITE SIDE: THE GOLDEN RULE** The most important principle in neurovascular assessment is **always comparing findings on the affected side with the opposite, unaffected side**. Many patients have baseline abnormalities (weak pulses, cool feet from poor circulation) that are chronic and not related to the current injury. Detecting **change from baseline or asymmetry between sides** is what matters. For example: - A patient who has chronically diminished bilateral pedal pulses from peripheral vascular disease may still have adequate perfusion to the feet. What matters is whether the pulse on the injured side has become even weaker (indicating new compromise). - A patient's baseline skin color on the feet may be slightly dusky, but what matters is whether one foot has become noticeably darker (indicating new cyanosis). - A patient may have chronic baseline paresthesia in the feet from diabetes; what matters is whether the paresthesia has worsened or changed in character.

Diagnostic imaging and laboratory tests complement physical examination and guide treatment decisions. As a Level II RN, you must understand the indications, principles, and nursing implications of common studies. **IMAGING STUDIES** **Plain Radiography (X-ray)** - **Principle**: X-rays are electromagnetic radiation that penetrate tissues to different degrees. Bone (dense) appears white; soft tissue appears gray; air appears black. - **Indications**: First-line study for fractures, dislocations, alignment problems, and bone abnormalities (tumor, infection, degeneration). X-rays show bone detail excellently but show soft tissue (ligaments, tendons, cartilage) poorly. - **Advantages**: Fast (minutes), inexpensive, widely available in Philippine hospitals and clinics, no special preparation - **Disadvantages**: Limited soft tissue detail; exposes patient to radiation - **Nursing preparation**: - **Confirm non-pregnant status**: Ask female patients of childbearing age if they could be pregnant; X-rays in pregnancy (especially first trimester) may harm fetal development - **Remove metal objects**: Ask patient to remove jewelry, watches, glasses, and metal prosthetics (which appear white on X-rays and obscure bony detail) - **Explain the procedure**: Assure the patient the procedure is brief and painless; warn that the technician may position the extremity in ways that stretch or compress it - **Post-procedure**: No special care needed; X-ray radiation is not retained in the body **Computed Tomography (CT)** - **Principle**: CT uses X-rays rotated around the patient to create detailed cross-sectional ("slice") images of tissues. - **Indications**: Provides superior detail of complex fractures (e.g., acetabular fractures), spine fractures, bony anatomy, and complications. Better than plain X-rays for complex injuries but still limited for soft tissue. - **Advantages**: Rapid, detailed bony anatomy, useful for complex fractures and pre-operative planning - **Disadvantages**: Significant radiation exposure (more than plain X-rays), expensive, requires transport to imaging suite - **Nursing preparation**: - **Confirm non-pregnant status** - **Remove metal objects** (same as X-ray) - **Assess for contrast allergy**: If IV contrast (dye) is used, ask about: - **Iodine allergy or shellfish allergy**: Contrast dye contains iodine and may cause allergic reaction (ranging from mild rash to anaphylaxis) in iodine-sensitive patients - **Renal function**: Contrast can be nephrotoxic; assess baseline creatinine and BUN; ensure adequate hydration; hold metformin (used for diabetes) if contrast is given (restart after 48 hours and renal function rechecked) - **NPO status**: Usually not required unless heavy sedation is planned - **Explain the procedure**: The patient lies on a table that moves through a donut-shaped scanner; the procedure is painless but loud; IV line is placed if contrast is used - **During**: Patient must remain still; breath-holding may be needed - **Post-procedure**: If contrast was given, encourage oral fluids to promote excretion and prevent nephrotoxicity (unless contraindicated by renal disease or heart failure); monitor for delayed allergic reactions (rash, itching) **Magnetic Resonance Imaging (MRI)** - **Principle**: MRI uses magnetic fields and radiofrequency waves to create detailed images of tissues, showing exceptional **soft tissue detail**. - **Indications**: Gold standard for visualizing soft tissues: ligaments, tendons, cartilage, muscles, discs, tumors, osteomyelitis (bone marrow edema), and tumor staging. Better than CT for soft tissue but takes longer. - **Advantages**: No ionizing radiation, best soft tissue detail, excellent for ligament/meniscal injuries and spinal disorders - **Disadvantages**: Longest imaging time (30–60 minutes), expensive, contraindicated with certain metal implants, claustrophobia, loud noise - **Absolute contraindications** (patient cannot have MRI): - **Cardiac pacemakers** (non-MRI-compatible): The magnetic field can interfere with pacemaker function - **Implanted defibrillators** (ICD) - **Cochlear implants** (non-MRI-compatible) - **Ferrous metal implants** (e.g., aneurysm clips, old metallic foreign bodies in the eye) that are not MRI-safe - **Metallic shrapnel or bullets** in the body (especially near the head or eyes) - **Relative contraindications** (may have MRI with precautions): - Some pacemakers and ICDs are now MRI-compatible (clarify model) - Metal prosthetic joints (modern joint replacements are usually MRI-safe, but movement during scanning can be uncomfortable; patient may need extra padding) - Dental fillings and braces (artifact, not contraindication) - **Nursing preparation**: - **Screen for metal**: Use a standardized MRI safety screening form. Ask about: - Pacemakers, defibrillators, cochlear implants, or other implanted devices - Occupational exposure to metal particles (metalworkers at risk for metal fragments in eyes) - Previous gunshot wounds or shrapnel - **Remove all metal objects**: Jewelry, watches, glasses, hearing aids, metallic clothing fasteners, hairpins, dentures with metal components - **Explain the procedure**: - "You will lie in a narrow, enclosed tunnel for 30–60 minutes." - "The machine is very loud (sounds like jackhammer or alarm); you will receive earplugs." - "You must remain completely still; any movement blurs images and requires repeating scans." - "You can communicate with the technician via a button; the machine can be stopped if needed." - "You will not feel pain, but you may feel warmth and hear loud noises." - **Counsel about claustrophobia**: If the patient is claustrophobic, discuss options: shorter, open-bore MRI machines (if available), mild sedation (requires NPO status and monitoring), or rescheduling. Many patients tolerate it better knowing what to expect. - **Apply a sign to the room/patient**: "MRI patient" to remind all staff to screen before entering the MRI suite - **Post-procedure**: No special restrictions; patient can resume normal activities **Bone Scan (Scintigraphy/Skeletal Scintigraphy)** - **Principle**: A radioactive tracer (usually **technetium-99m (Tc-99m)**) is injected intravenously. The tracer concentrates in areas of high bone turnover. A special camera (gamma camera) detects the radiation and creates an image. - **Indications**: Detects areas of increased bone turnover: tumor metastases, osteomyelitis (bone infection), occult (hidden) fractures not visible on X-ray, stress fractures, and avascular necrosis (bone death from loss of blood supply). - **Interpretation**: - **"Hot spot"** (bright area): Increased uptake of tracer indicating high bone turnover (tumor, infection, fracture healing, or arthritis) - **"Cold spot"** (dark area): Decreased or absent uptake, indicating bone death or absence of bone activity - **Advantages**: Very sensitive for detecting bone pathology; can scan entire body to detect metastases - **Disadvantages**: Delay between injection and scanning (2–3 hours), not specific (many conditions cause hot spots), involves radioactivity, cannot image specific anatomy in detail - **Radiation exposure**: Technetium-99m has short half-life (6 hours); the dose is small and excreted in urine within 24 hours - **Nursing preparation**: - **NPO**: Usually not required - **Explain the procedure**: "A small amount of radioactive dye will be injected; you will wait 2–3 hours (the tracer distributes throughout your bones); then you will lie under a camera that takes pictures. The procedure is painless." - **Reassure about radiation**: "The amount of radioactivity is very small; similar to a regular X-ray; you will not be radioactive to others after the scan." - **Schedule accordingly**: Plan the 2–3 hour delay; patient can eat and drink while waiting - **Post-procedure**: - **Encourage fluids**: Drinking water and urinating frequently helps excrete the tracer and reduces radiation exposure to the bladder - **No special isolation**: The patient is not radioactive to others - **Normal activities**: Patient can resume normal activities **Dual-Energy X-ray Absorptiometry (DEXA)** - **Principle**: DEXA uses two different X-ray beams to measure bone mineral density (BMD). Results compare the patient's BMD to that of a healthy 30-year-old (T-score) and to age/sex-matched controls (Z-score). - **Indications**: Diagnoses osteoporosis and osteopenia; used to screen postmenopausal women, men >70, or patients on bone-weakening medications (corticosteroids). In the Philippines, osteoporosis is underdiagnosed; DEXA should be offered to at-risk patients. - **T-score interpretation**: - **T ≥ -1.0**: Normal bone density - **T -1.0 to -2.5**: Osteopenia (low bone mass; increased fracture risk) - **T < -2.5**: Osteoporosis (significantly low bone mass; high fracture risk) - **Advantages**: Quick (10–20 minutes), minimal radiation, non-invasive, predicts fracture risk - **Disadvantages**: Does not assess bone quality, only quantity; does not diagnose cause of bone loss; artifacts (degenerative changes, metal implants) can falsely elevate scores - **Nursing preparation**: Minimal; remove metal objects; assure the procedure is brief and painless - **Post-procedure**: No restrictions **INVASIVE PROCEDURES** **Arthroscopy** - **Principle**: A fiberoptic scope (arthroscope) is inserted into a joint (usually knee or shoulder) to visualize, biopsy, or repair internal structures. It is performed under anesthesia in an operating room or surgical center. - **Indications**: Diagnostic (visualizing meniscal tears, ligament injury, cartilage damage) or therapeutic (repair meniscus, remove loose bodies, repair ligaments, debride cartilage) - **Nursing care**: **Pre-procedure**: - Verify informed consent is signed - Patient is NPO (nil per os, nothing by mouth) for 6–8 hours before anesthesia - IV access is established - Skin preparation (scrub with antimicrobial soap) per protocol - Pre-operative medications (sedative, antibiotic prophylaxis) are given - Patient is transported to OR **Intra-operative**: Nurse assists surgeon; monitors vital signs and fluid balance **Post-operative**: - Assess **neurovascular status** distal to the surgical site immediately (before patients leaves recovery room) and frequently (q15 min initially, then q1–2 hours); neurovascular compromise can occur from swelling or tourniquet use - Apply **compression dressing** (elastic wrap or knee brace) and **ice** to minimize swelling - **Elevate the extremity** above heart level (e.g., on 2–3 pillows for leg) to reduce swelling - Monitor **pain** and administer analgesia as ordered; pain is expected post-operatively - Monitor **wound**: Check for excessive bleeding or fluid accumulation under the dressing; a small amount of drainage is normal; excessive drainage (soaking dressing) is reported - **Activity**: Patient is usually allowed to bear weight or use the joint immediately post-operatively (unlike open surgery); physical therapy begins within days - **Discharge instructions**: - Keep dressing dry; can shower per surgeon's instructions (usually after 48 hours) - Continue ice and elevation at home - Do not engage in strenuous activity or sports for several weeks (typically 4–6 weeks depending on procedure) - Attend physical therapy as prescribed - **Report to surgeon**: Fever (>38.5°C or 101.3°F), increasing pain, swelling that does not relieve with elevation and ice, drainage, redness, or warmth around the incision (signs of infection), or inability to bear weight or use the joint as expected **Arthrocentesis** - **Principle**: A needle is inserted into a joint to aspirate (remove) synovial fluid for analysis or to inject medication. - **Indications**: - **Diagnostic**: Analyze fluid for signs of infection (white blood cell count, bacteria culture, Gram stain), crystals (gout or pseudogout), blood (hemarthrosis from traumatic injury), or autoimmune disease markers - **Therapeutic**: Inject corticosteroid to reduce inflammation and pain - **Nursing care**: - **Pre-procedure**: Explain procedure; patient may receive local anesthetic; position joint comfortably - **Procedure**: Physician marks site, cleans with antiseptic, and inserts needle; fluid is aspirated - **Post-procedure**: Apply sterile dressing; ice and elevation reduce swelling; patient usually returns to light activity after resting briefly - **Complications**: Rare; infection is most serious (aseptic technique is essential) **LABORATORY TESTS** Laboratory studies support diagnosis and monitor response to treatment: **Serum Calcium** - **Normal range**: 8.5–10.5 mg/dL (total calcium); ionized calcium 4.5–5.3 mg/dL - **Indications**: Diagnoses hypocalcemia or hypercalcemia, monitors bone health - **High (hypercalcemia)**: May indicate hyperparathyroidism, malignancy with bone metastases, vitamin D toxicity, or immobility (especially in young patients who remain bedridden long-term) - **Low (hypocalcemia)**: May indicate hypoparathyroidism, vitamin D deficiency, chronic kidney disease, or massive transfusion **Serum Phosphorus** - **Normal range**: 2.5–4.5 mg/dL - **Indications**: Works with calcium to regulate bone mineralization - **High**: Kidney disease, hypoparathyroidism - **Low**: Hyperparathyroidism, vitamin D deficiency, malabsorption **Alkaline Phosphatase (ALP)** - **Normal range**: 40–129 U/L (varies by lab and age; higher in children and adolescents with growth) - **Indications**: Enzyme produced by osteoblasts during bone formation and by liver; elevated in bone disease or liver disease - **High**: Active bone healing (weeks to months after fracture), Paget disease, bone tumor, liver disease, pregnancy - **Clinical significance**: Rising ALP after fracture indicates healing is occurring; sustained elevation beyond expected timeline suggests complications - **Nursing consideration**: Interpret in context; elevated ALP with normal calcium and phosphorus may indicate bone healing, not bone disease **Uric Acid** - **Normal range**: 3.5–7.2 mg/dL (men); 2.6–6.0 mg/dL (women) - **Indications**: Diagnoses gout (crystal arthropathy from monosodium urate crystal deposition) - **High (hyperuricemia)**: Increases gout risk; triggers include diet high in purines (red meat, organ meats, seafood, alcohol), diuretics, kidney disease, malignancy, and chemotherapy - **Nursing consideration**: Patients with gout are taught to limit purine intake; in the Philippines, limit seafood (which is commonly eaten), organ meats, and alcohol **Erythrocyte Sedimentation Rate (ESR) and C-Reactive Protein (CRP)** - **ESR normal range**: <20 mm/hr (age-related; higher in older adults) - **CRP normal range**: <3 mg/L - **Indications**: Non-specific markers of inflammation and infection; elevated in rheumatoid arthritis, infection, malignancy, and other inflammatory conditions - **Rheumatoid Arthritis**: ESR and CRP are elevated during active disease; monitored to assess response to treatment - **Infection (osteomyelitis)**: Elevated ESR and CRP support diagnosis; normalized with successful treatment - **Nursing consideration**: Elevated ESR and CRP are non-specific; interpret with clinical findings and other tests **Rheumatoid Factor (RF) and Anti-CCP Antibodies** - **Rheumatoid Factor**: Positive in ~70% of rheumatoid arthritis patients; also seen in other autoimmune diseases and infections; can be positive in healthy people (low specificity) - **Anti-CCP (cyclic citrullinated peptide)**: More specific for rheumatoid arthritis (~95% specific); often present early in disease; predicts worse prognosis - **Indications**: Diagnoses rheumatoid arthritis; both tests positive is highly diagnostic - **Nursing consideration**: Positive RF alone is not diagnostic of rheumatoid arthritis; clinical presentation and other tests must be considered **Other Tests** - **Antinuclear Antibody (ANA)**: Positive in systemic lupus erythematosus and other autoimmune diseases; may cause arthritis - **HLA-B27**: Positive in ankylosing spondylitis and reactive arthritis; HLA-B27-positive patients are at high risk for these diseases - **Culture and Gram stain** (if infection suspected): Arthrocentesis fluid or bone biopsy is cultured to identify bacteria (osteomyelitis) or other organisms

Casts and traction are foundational interventions in orthopedic nursing. Both work by immobilizing and aligning injured body parts to allow healing and prevent complications. Understanding the nursing care of casts and traction is essential for safe, effective patient management. **PRINCIPLES OF CASTS** A cast is a rigid, custom-molded immobilization device that holds a body part in a fixed position to: - Promote fracture healing by preventing motion at the fracture site - Maintain proper alignment of bone fragments - Reduce pain by immobilizing the injured part - Prevent deformity - Allow early mobilization of unaffected joints **Cast Materials** Casts are made of two main materials: **Plaster of Paris** - **Composition**: Calcium sulfate hemihydrate mixed with water and fabric (usually gauze) impregnated with the plaster material - **Drying time**: 24–72 hours for complete hardening (plaster hardens from the outside inward; outer surface may feel hard in hours, but full hardening takes much longer) - **Advantages**: Inexpensive, easily moldable during application, x-rays pass through easily for follow-up imaging, allows good visualization of skin underneath (can feel for swelling) - **Disadvantages**: Heavy, takes long time to dry, water absorbs into plaster making it weaker and promoting skin maceration, cannot get wet, less durable - **Common use**: Emergency departments, initial cast application in limited-resource settings **Fiberglass (Synthetic Casts)** - **Composition**: Knitted fiberglass fabric impregnated with a resin that hardens when exposed to water - **Drying time**: 30 minutes to 1 hour (much faster than plaster) - **Advantages**: Lightweight, durable, water-resistant (can get wet with proper care), dries quickly, x-rays pass through, stronger than plaster - **Disadvantages**: More expensive than plaster, feels hard immediately (difficult to mold after initial hardening), less conformable to irregular body contours - **Common use**: Acute care, rehabilitation, and outpatient settings; preferred for active patients **Types of Casts** Casts are named by the body region immobilized: - **Upper extremity**: Arm cast (immobilizes wrist and hand), short-arm cast (immobilizes wrist), long-arm cast (immobilizes elbow and wrist), shoulder spica (immobilizes shoulder) - **Lower extremity**: Short-leg cast (immobilizes ankle and foot below the knee), long-leg cast (immobilizes knee, ankle, and foot), hip spica (immobilizes hip and lower extremity) - **Spine**: Body jacket (immobilizes thoracic or lumbar spine) **NURSING CARE OF A NEW (WET) CAST** The first 24–72 hours after cast application are critical for preventing complications. **Immediate Care (First Hours)** • **Support the wet cast with the palms of the hands, not the fingertips**: A wet cast is soft and indents easily. Indentations create **pressure points** that can lead to skin breakdown and pressure ulcers under the cast. Use your whole hand (flat of the palm) to support the cast; avoid gripping or pressing with fingertips. • **Allow the cast to air dry completely**: Do not cover the wet cast with blankets or plastic (which traps moisture and prolongs drying). Place the casted extremity on open pillows or a padded surface to allow air circulation. Do NOT apply heat (hair dryer, heat lamp) as this dries the outside rapidly while the inside remains wet, trapping moisture and potentially burning skin. • **Elevate the extremity above heart level for the first 24–48 hours**: Elevation reduces swelling (edema). Swelling increases compartment pressure and risk of compartment syndrome, and also creates pressure inside the cast. Use pillows to elevate the limb above the heart (e.g., three pillows for a leg cast). • **Apply ice to the cast as ordered**: Ice (not directly on skin, but on the cast itself) reduces inflammation and swelling around the fracture. Place ice in a plastic bag and apply to the cast surface around the injury site (e.g., around the ankle in an ankle cast). Never place ice directly on skin. • **Perform frequent neurovascular checks**: Every 15–30 minutes for the first few hours, then q1–2 hours for the first 24 hours. **Pain (especially pain on passive stretch of the fingers or toes) is the earliest sign of compartment syndrome.** Report any deterioration immediately. **Ongoing Care of the Casted Extremity** • **Continue elevation and ice** as ordered; reduce frequency after the first 48 hours but continue for several days if swelling is present. • **Assess for a "hot spot"** — an area of warmth or pain under the cast that indicates pressure, friction, or possible infection or skin breakdown (pressure ulcer). Ask the patient, "Is there any area under the cast that feels hot, or any spot that is more painful than others?" If a hot spot is identified: - Do NOT attempt to cut the cast window yourself; this is done by the physician or experienced nurse - **Circle and date the area** with a marker on the cast to indicate location and time, and monitor whether it expands (expanding hot spot indicates worsening pressure or infection) - Report to the physician; the cast may need windowing (cutting a circular opening) to relieve pressure • **Check for foul odor** beneath the cast, which suggests infection or tissue breakdown. Any odor must be reported. • **Monitor for drainage** under the cast. Small amounts of clear or light-colored drainage (serum) are expected. Document drainage location and amount. **Circle and date any drainage** to monitor whether it spreads (expanding drainage suggests infection or pressure ulcer). Excessive or purulent (pus-containing) drainage is reported immediately. • **Assess skin integrity at cast edges**. The cast edge can irritate skin. Inspect areas where the cast ends (ankle, wrist, palm, fingertips) for redness or irritation. Padding or a sock under the cast edge reduces friction. • **Teach the patient about cast care** (see patient education below). **PATIENT EDUCATION: CAST CARE AT HOME** Before discharge, teach the patient: • **Never insert objects into the cast**: Explain that scratching under the cast by inserting pencils, coat hangers, or other objects is dangerous because: - Objects can break the delicate healing skin under the cast - Broken skin invites bacterial infection (including osteomyelitis — bone infection) - Once skin is broken, healing is difficult and hidden under the cast - This is the **most common cause** of skin complications under casts - Use a skin moisturizer (lotion) on areas outside the cast, or a soft cloth to gently rub edges if itching is severe • **Keep the cast clean and dry**: - **Plaster casts**: Avoid water; do not submerge in water (water weakens plaster and causes maceration of skin) - **Fiberglass casts**: Can be exposed to water briefly (swimming, shower), but: - Dry thoroughly after water exposure by air-drying or using a blow dryer on low heat - Do not soak for extended periods (water can seep inside) - Wear a plastic bag over the cast when showering if not comfortable with water exposure • **Elevation and ice**: - Continue elevating the casted extremity above heart level at home (e.g., on pillows while sitting or lying down) - Swelling that persists days or weeks after casting may indicate a complication and should be reported - Apply ice (in a plastic bag, not directly on skin) as instructed; this reduces pain and swelling • **Pain and swelling management**: - Expected: Some mild pain and swelling in the first few days - Report immediately: Severe pain, pain that worsens, pain out of proportion, or pain not relieved by analgesia — these suggest compartment syndrome, pressure ulcer, or infection - Report: Swelling that increases despite elevation and ice, especially if accompanied by pain • **Signs of infection or complications to report immediately**: - **Fever** (≥38.5°C or 101.3°F) — suggests infection - **Foul odor** under the cast — suggests infection or tissue breakdown - **Drainage** seeping out from under the cast, especially if purulent (foul-smelling, cloudy, yellowish) - **Numbness, tingling, or loss of sensation** in the fingers or toes — suggests nerve compression - **Inability to move** the fingers or toes, or weakness — suggests muscle damage from pressure - **Pallor, cyanosis, or coldness** of the extremity — suggests poor circulation - **Skin irritation or broken skin** around the cast edge - **Cracks or soft spots** in the cast, or cast becoming loose or shifting — reduces stability • **Activity restrictions**: - Follow physician's restrictions on weight-bearing (for lower extremity casts) - Avoid strenuous activity; do not engage in sports or heavy work while casted - Do not attempt to modify the cast (do not cut or trim it) • **Follow-up appointments**: Attend all scheduled physician visits for cast check, X-rays to assess healing, and timely cast removal or replacement. **COMPLICATIONS OF CASTS** Nurses must monitor for and prevent complications: • **Pressure ulcer (decubitus ulcer)**: Develops from prolonged pressure on skin under the cast. Prevention includes proper cast padding, frequent position changes, use of the palms (not fingers) when handling wet cast, and monitoring for hot spots. A pressure ulcer under a cast is serious because it is hidden and difficult to treat while the cast is in place. • **Compartment syndrome**: Discussed extensively in the neurovascular assessment section. Rising pressure from swelling can compromise blood and nerve supply. Prevention includes elevation, ice, pain monitoring, and maintaining proper cast fit. Early detection through pain assessment is critical. • **Skin maceration and breakdown**: Moisture under the cast (from sweat, water exposure, or prolonged wetness) softens skin. Prevention includes keeping the cast dry, allowing air circulation, and using powder inside the cast. • **Nerve compression**: Pressure on a nerve under the cast causes numbness, tingling, or weakness. Risk increases with improper padding. Report paresthesia or motor weakness immediately. • **Vascular compromise**: Tight cast or swelling reduces blood flow. Signs include coolness, pallor, slow capillary refill, and weak pulses. Requires immediate loosening (splitting) of the cast or replacement. • **Cast syndrome** (rare): Abdominal distension, nausea, and vomiting from compression of the duodenum by the superior mesenteric artery (occurs with body jackets). Treat by loosening the cast. • **Osteoporosis and muscle atrophy**: Prolonged immobility causes bone loss and muscle wasting. Mobilize unaffected joints and begin rehabilitation immediately after cast removal. **REMOVAL OF CAST** When healing is complete (confirmed by X-rays), the cast is removed using a cast saw or grinder. Reassure patients that: • The saw is **loud but does not cut skin** — it vibrates and cuts the hard cast, not soft tissue beneath • Slight warmth is felt where the saw cuts, but no pain should occur • Skin underneath the cast will be pale, scaly, and mottled — this is normal and resolves within days as skin color returns • Mild itching under the cast before removal is normal Post-removal care: - Wash the skin gently with mild soap and warm water; do not scrub (skin is fragile) - Apply lotion to moisturize - Gradually increase activity under guidance of physical therapy - Continue ice if swelling persists - Perform ROM exercises to restore joint mobility **PRINCIPLES OF TRACTION** Traction applies a pulling force to a body part to: - Reduce and immobilize fractures (align bone fragments) - Correct deformities (e.g., contractures) - Relieve muscle spasm - Decompress spinal joints (for back or neck pain) There are two main types: **Skin Traction** - **Mechanism**: The pulling force is applied **through the skin** (not the bone) via boots, adhesive strips, or belts attached to the skin - **Examples**: - **Buck's traction**: Used for hip or femur fractures; a padded boot is placed under the patient's foot or leg, and weights are attached via pulley; the foot of the bed is elevated - **Cervical skin traction**: A halo or chin-strap pulls on the head for cervical spine problems - **Pelvic traction**: A belt around the pelvis applies traction to the lumbar spine - **Weight limits**: Typically light (2–3.5 kg), because heavier weights would damage skin - **Duration**: Short-term only (days to weeks); skin cannot tolerate traction indefinitely - **Advantages**: Non-invasive, can be applied in the emergency department, patient can be moved to some extent - **Disadvantages**: Limited weight capacity, limited duration, skin irritation risk **Skeletal Traction** - **Mechanism**: The pulling force is applied **directly to bone** through a surgically inserted pin or wire (e.g., Steinmann pin or Kirchner wire) - **Examples**: - **Balanced suspension traction**: Used for femur fracture; a pin is inserted through the distal femur or proximal tibia, and weights are attached via pulleys (can support much heavier weights than skin traction) - **Halo traction**: Used for cervical spine injury; pins are inserted into the skull - **Weight capacity**: Heavy (up to 30+ kg possible), allowing higher forces for larger bones - **Duration**: Long-term (weeks to months) until fracture heals enough for casting or surgery - **Advantages**: Direct bone application allows heavy traction; precise alignment; long-term use - **Disadvantages**: Surgical procedure required for pin insertion, risk of pin-site infection, more uncomfortable than skin traction, more complex care **NURSING CARE OF TRACTION** The following principles apply to all types of traction: **Maintain the Traction Force** • **Weights must hang freely and never rest on the floor or bed**: The weight of the hanging weights provides the traction force. If weights touch the bed, floor, or any surface, they no longer pull, and the traction force is lost. Check frequently (even hourly) that weights are hanging freely and unobstructed. • **Do not remove or add weights without a physician's order**: The weight prescribed is carefully calculated to provide adequate reduction without causing excessive stretch. Changing weights alters the traction force and may displace bone fragments or increase soft tissue damage. • **Maintain proper patient positioning and alignment**: The patient must remain in the center of the bed, with proper body alignment, so that traction force is applied directly along the bone axis (not at an angle). • **Maintain countertraction**: Most traction requires an opposing force (countertraction) to prevent the patient from sliding toward the weights. Examples: - In **Buck's traction for leg**, elevate the foot of the bed so gravity provides countertraction (the patient's body weight pushes toward the head of the bed, opposing the traction pull) - The patient's body weight naturally provides countertraction if positioning is proper - Do not allow patients to slide or shift in the bed • **Keep ropes on the pulleys and knots secure**: Ropes guide the traction force along the correct direction. If a rope slips off a pulley, traction direction changes. Check that: - Ropes are centered on pulleys (not rubbing the pulley edges) - Knots are tight and secure - No fraying or damage to ropes - Ropes move smoothly through pulleys **Pin-Site Care** (for skeletal traction only) The pin inserted through bone is an open wound that is at risk for infection (pin-site infection). Infection can progress to **osteomyelitis** (bone infection), a serious complication. • **Frequency**: Pin-site care is performed 1–2 times daily (per protocol) • **Technique (aseptic)**: 1. Wash hands and don clean gloves 2. Observe the pin site for redness, warmth, swelling, crusting, drainage (purulent or clear), or loosening of the pin 3. Clean the pin site using an aseptic technique (some institutions use sterile technique): - Use sterile gauze soaked in normal saline or hydrogen peroxide (check protocol) - Gently wipe around the pin in a circular motion, starting at the pin and moving outward - Use a fresh gauze for each wipe - Remove debris or crust, but do not force crusts (slight crusting at the entry point is normal) 4. Dry with sterile gauze 5. Apply a sterile dressing (usually a small gauze pad or a special pin-site dressing per protocol) 6. Document findings: appearance of site, any drainage, patient's pain level, and any signs of infection • **Signs of pin-site infection to report immediately**: - Redness or erythema beyond 1 cm from the pin - Warmth around the pin site - Purulent (pus) drainage - Swelling or edema at the site - Loosening of the pin (feels unstable) - Pain at the pin site (beyond expected discomfort) - Fever (may indicate systemic infection) • **Prevention**: - Maintain aseptic technique during pin-site care - Keep the area as clean and dry as possible - Do not allow soiling from bedpan, urinary incontinence, or other sources - Monitor for early signs and report promptly - Ensure patient understands importance of not touching the pin site **Neurovascular and Skin Monitoring** • **Perform neurovascular checks** (see earlier section) every 2–4 hours or per protocol. Traction increases risk of compartment syndrome and vascular compromise; pain assessment is critical. • **Assess skin integrity regularly**, especially over bony prominences (sacrum, heels, elbows) and areas under the traction apparatus. Immobility increases pressure ulcer risk. Implement pressure ulcer prevention: - Change position frequently (every 2 hours) within the constraints of traction - Use pressure-relieving devices (foam pads, air mattress, pressure-relief pillows) - Keep skin clean and dry - Monitor for redness or breakdown - Perform range of motion on unaffected joints • **Monitor for signs of deep vein thrombosis (DVT)**: - Unilateral calf swelling (measure calf circumference at a marked location daily) - Calf pain, especially with foot dorsiflexion (Homan's sign, though it's non-specific) - Redness or warmth in the leg - Low-grade fever - Any of these findings are reported immediately; DVT is a potentially fatal complication if embolus occurs - **DVT prophylaxis** is often prescribed: compression stockings, sequential compression devices (SCDs), or anticoagulation (heparin, LMWH, or DOACs depending on protocol and patient factors) **Comfort and Activity** • **Pain management**: Traction can be uncomfortable. Provide analgesia 30 minutes before care activities; assess pain regularly. • **Maintain orientation and prevent complications of immobility**: - Provide frequent communication; immobilized patients can feel isolated - Encourage deep breathing and coughing to prevent pneumonia - Monitor bowel and bladder function; immobility often causes constipation - Provide bedpan/urinal use; foley catheter use increases infection risk, so encourage voiding via bedpan if possible - Ensure adequate nutrition and fluids - Manage anxiety; explain what is happening and provide reassurance • **Activity within traction limits**: - Upper extremities: Usually have full ROM; encourage self-care and activities - Unaffected lower extremity: Encourage knee bends, hip motion, and ankle motion - Affected extremity: Only as prescribed by physician (usually none until initial swelling resolves) - Bed mobility: Teach patient to use trapeze to lift hips and reposition **Transition from Traction** Once fracture has healed (confirmed by X-ray), traction is usually replaced with casting or the patient is allowed to bear weight. This transition is usually gradual: - The patient may transition to a cast while in traction, or - Traction is slowly reduced (weight decreased gradually over days) while the fracture stabilizes - Physical therapy begins - Patient progresses to ambulation with assistive device **COMPARISON OF CASTS AND TRACTION** | Feature | Cast | Traction | |---------|------|----------| | Application | Rigid, molded immobilization | Pulling force via weights | | Soft tissue | Skin on entire immobilized area | Only at pin site (skeletal) or boot area (skin) | | Weight capacity | Light (especially plaster) | Moderate to heavy (skeletal) | | Duration | Days to weeks | Days to weeks (skin) or weeks to months (skeletal) | | Drying time | Plaster 24–72 hrs; fiberglass 30 min | N/A | | Patient mobility | Limited; can be ambulated with assistive device if lower extremity cast | Very limited; bed-bound or minimal activity | | Cost | Inexpensive | Expensive | | Care complexity | Moderate | High | | Infection risk | Pressure ulcer under cast | Pin-site infection (skeletal) | | Advantages | Simple, inexpensive, portable, allows mobilization of unaffected joints | Precise alignment, longer duration possible, allows higher weights | | Disadvantages | Cannot adjust after hardening, pressure risk | Confining, uncomfortable, higher infection risk, expensive |