Orthopedic nursing spans the continuum from emergency fracture care to elective joint replacement rehabilitation. Whether you’re working a trauma bay, a med-surg orthopedic floor, or a post-anesthesia care unit, you will encounter patients with casts, traction devices, external fixators, and fresh surgical hardware — and each carries a distinct set of nursing priorities. The NCLEX tests orthopedic nursing heavily, with particular emphasis on neurovascular assessment, compartment syndrome recognition, traction maintenance, and hip replacement precautions. This article covers all of it in clinical depth, with the specific decision points and NCLEX traps that distinguish a well-prepared student from one who simply memorized a list.
For a thorough grounding in how bones break and how fractures are classified, see fractures nursing before working through this article.
Neurovascular assessment: the 5 Ps
The cornerstone of orthopedic nursing is the neurovascular check — a systematic assessment performed at the distal end of an injured or casted extremity to detect vascular compromise or nerve damage before irreversible injury occurs. Most programs teach the 5 Ps: Pain, Pallor, Pulse, Paresthesia, and Paralysis/Paresis. Many clinical settings add a sixth — Capillary Refill — giving six parameters in total.
Perform a full neurovascular check every 1–2 hours during the first 24 hours after a fracture or orthopedic surgery, and immediately when any change in symptoms is reported. Document findings on a flow sheet and compare bilaterally.
| Parameter | Normal finding | Abnormal finding / clinical significance |
|---|---|---|
| Pain | Expected at injury site; manageable with ordered analgesia | Pain out of proportion to injury, unresponsive to opioids, or worsening on passive stretch — compartment syndrome until proven otherwise |
| Pallor | Skin color matches contralateral limb; pink nail beds | Pallor, mottling, or cyanosis distal to injury — impaired arterial inflow or venous outflow |
| Pulse | Distal pulse present and equal bilaterally (radial, dorsalis pedis, posterior tibial) | Absent, weakened, or asymmetric pulse — vascular injury, arterial spasm, or compartment syndrome; notify provider STAT |
| Paresthesia | Normal sensation throughout the distal extremity | Numbness, tingling, or burning — early sign of nerve ischemia; often the first neurological warning of elevated compartment pressure |
| Paralysis / paresis | Active movement of fingers or toes; grip or plantar flexion intact | Inability to move distal joints voluntarily — late sign of neurovascular compromise; may indicate compartment syndrome or nerve laceration |
| Capillary refill | Less than 3 seconds | >3 seconds — impaired microcirculation; may reflect dehydration, cold environment, or vascular compromise |
Pain on passive stretch — the most sensitive early sign
Among the 5 Ps, pain on passive stretch is the earliest and most sensitive indicator of compartment syndrome. To assess it, gently extend the fingers or toes distal to the injury or cast. If this passive movement produces severe, disproportionate pain, you have a compartment syndrome warning that requires immediate action — even when the other parameters remain normal.
Assess each parameter at every check. Document what you find. Any change from baseline — even subtle paresthesia that was not present an hour ago — warrants escalation. Waiting for paralysis or pulse loss before reporting delays care by hours and can result in permanent damage. The pain of compartment syndrome is graded in relation to pain assessment findings at baseline; changes in character or severity are more significant than absolute scores.
Compartment syndrome
Compartment syndrome occurs when pressure within a closed muscle compartment rises to the point where perfusion falls below the metabolic demands of the tissue. The result is ischemia to muscle and nerve — irreversible after approximately 6–8 hours without intervention.
Causes
Compartment syndrome occurs when something increases pressure inside a fixed compartment or reduces the compartment size:
- Fractures (tibial shaft fractures are the highest-risk single injury)
- Burns, crush injuries, or reperfusion after arterial injury
- Casts or circumferential dressings applied too tightly
- Intravenous infiltration in a confined space
Recognition
The hallmark constellation is:
- Severe pain out of proportion to the injury — the patient reports it as unlike their usual fracture pain; it is not controlled by opioids
- Pain on passive stretch of muscles in the compartment
- Tense, woody firmness of the compartment on palpation
- Paresthesia — burning or numbness in the distribution of nerves passing through the compartment
Compartment pressure monitoring: a pressure of >30 mmHg, or within 30 mmHg of the patient’s diastolic blood pressure (delta pressure ≤30 mmHg), is the threshold for surgical intervention (emergent fasciotomy). Do not wait for the pulse to disappear — by that point, muscle has already been ischemic for a dangerous length of time.
Nursing response — the NCLEX sequence
- Loosen or remove any constrictive dressings, splints, or cast material immediately — even before calling the provider
- Position the limb at heart level — not elevated, not dependent
- Notify the provider STAT and report all neurovascular findings
- Prepare for fasciotomy — surgical incision through the fascia to decompress the compartment; the definitive treatment
NCLEX trap: Many students choose “elevate the extremity to reduce swelling” as the initial action. This is correct for routine edema management after casting, but it is the wrong answer when compartment syndrome is suspected. Elevation reduces arterial inflow to an already-ischemic compartment and worsens the injury. The correct action is limb at heart level, dressings loosened, provider notified.
When a cast is in place, the cast is bivalved (cut along both sides and spread open) as an emergency temporizing measure while the provider is called. This immediately reduces the pressure the cast is exerting on the compartment.
Cast care
Casts immobilize fractures, protect surgical repairs, and correct deformities. Two materials dominate clinical practice: plaster of Paris and fiberglass. Each has distinct properties, drying characteristics, and patient education requirements.
Plaster vs fiberglass
Plaster (calcium sulfate) hardens through an exothermic chemical reaction with water. It takes 24–48 hours to achieve full strength. During drying:
- Handle the cast with palms, not fingers — fingertips create indentations that cause pressure points inside the cast
- Do not cover with blankets or plastic (heat and moisture buildup impair even drying and can cause burns from the exothermic reaction)
- Elevate on pillows for the first 24–48 hours to reduce edema; position with joints in neutral alignment
Fiberglass (polyurethane-coated glass fiber) cures within minutes. It is lighter, more durable, and radiolucent. It is water-resistant but not waterproof — standard fiberglass casts cannot be submerged. A waterproof liner can be placed under a fiberglass cast with provider approval, allowing showering; the liner must fully dry before the next application.
Cast care do’s and don’ts
| Do | Don't |
|---|---|
| Keep the cast elevated above heart level for 24–48h after application | Insert objects (pens, rulers, coat hangers) inside the cast to scratch skin |
| Inspect the cast edges and skin underneath daily; petal rough edges with moleskin or tape | Apply lotion or powder inside the cast — creates maceration and pressure point risk |
| Perform neurovascular checks every 1–2h for the first 24h; report changes immediately | Get the cast wet (plaster) or immerse fiberglass without a waterproof liner |
| Report odor, warmth, drainage, increasing pain, or numbness promptly | Cover a plaster cast while drying — impairs curing and traps heat |
| Use a blow dryer on cool/low setting to relieve itching — never warm or hot | Bear weight on a non-weight-bearing cast without provider clearance |
| Handle a new plaster cast with the palms of both hands during transfer | Trim or modify the cast without provider instruction |
Petaling cast edges
Rough plaster edges abrade the skin and cause pressure sores, particularly at the heel, ankle malleoli, and radial styloid. The nurse or patient can “petal” the edges by cutting adhesive moleskin into strips with rounded petals at one end, folding them over the cast edge with the petal on the inside, and securing the straight end to the outside of the cast.
Complications requiring immediate reporting
- Odor: foul smell suggests tissue maceration, skin breakdown, or wound infection underneath the cast — refer to wound care nursing principles for assessment guidance
- Warmth over one area: focal warmth suggests infection; diffuse warmth is expected during initial plaster drying
- Drainage seeping through the cast: new drainage may indicate wound dehiscence or hematoma
- Skin changes at cast edges: red, broken, or macerated skin signals pressure injury requiring cast modification
- Any change in the 5 Ps: escalate immediately; do not wait for the next scheduled check
Post-op wound care after cast removal requires close attention to infection control principles — skin under a cast is warm, moist, and vulnerable to colonization.
Traction
Traction applies a pulling force along the long axis of a bone to reduce fractures, maintain alignment, relieve muscle spasm, or maintain position before surgery. Two major categories exist: skin traction and skeletal traction, each with specific subtypes, weight limits, and nursing priorities.
Traction types
| Type | Subtypes | Application | Max weight | Common use | Duration |
|---|---|---|---|---|---|
| Skin traction | Buck's traction | Foam boot or adhesive strips, unilateral lower extremity | 5–7 lbs | Hip fracture immobilization pre-op; reduces muscle spasm | Temporary; days |
| Russell's traction | Bilateral slings under knee and lower leg | Femoral shaft fractures, especially pediatric | |||
| Dunlop's traction | Lateral upper extremity, arm suspended horizontally | Pediatric supracondylar / humeral fractures | |||
| Skeletal traction | Tibial pin traction | Steinmann pin through proximal tibia | 25–40 lbs depending on bone / site | Femoral shaft fractures requiring definitive alignment | Days to weeks; continuous |
| Femoral pin traction | Pin through distal femur | Tibial plateau fractures | |||
| Cervical halo traction | Pins into outer table of skull, attached to halo ring and vest | Cervical spine fractures or instability |
Nursing management principles — universal to all traction
Maintain continuous traction. The single most important rule. Traction weights must hang freely and continuously. Do not remove weights to reposition the patient, for bathing, or during transport unless there is an explicit provider order to do so. Interrupting traction can cause the fracture fragments to override.
Ensure weights hang freely. Weights that rest on the floor, the bed frame, or a chair provide no traction force. Every assessment, confirm that the weight bag is off all surfaces and the rope runs freely through the pulley.
Counter-traction. For lower extremity traction, the patient’s own body weight provides counter-traction by placing the head of the bed in slight elevation (Trendelenburg reverse, typically 20–30 degrees). For cervical traction, the patient lies flat and gravity creates the counter-force. Counter-traction must be maintained; a patient who slides toward the foot of the bed negates the traction.
Footplate and foot pump. Attach a footboard or footplate to maintain the foot at 90° dorsiflexion and prevent foot drop. Use foot pumps or encourage active ankle pumps to reduce the DVT risk that immobility creates — a risk DVT nursing care covers in detail.
Skin inspection. Under skin traction, inspect bony prominences (heel, malleoli, sacrum) every 2 hours. Reapply foam strips if they slip. Under skeletal traction, inspect all skin that contacts the frame or ropes.
Neurovascular checks every 2 hours. Apply the 5 Ps to the distal extremity; document and compare bilaterally.
Pin site and external fixator care
Skeletal traction and external fixators both involve pins or wires that pass through the skin and into bone. Each pin site is a direct pathway for bacteria to reach bone — osteomyelitis is the feared complication, and prevention depends on consistent pin site care.
Pin site care protocol
- Clean each pin site once or twice daily (per facility protocol) with normal saline (0.9% NaCl) or chlorhexidine solution
- Use a sterile cotton-tipped applicator, working from the pin outward in a circular motion — never contaminate clean areas by moving inward
- Gently remove dried crusts — do not forcibly debride; gentle removal keeps the pin-skin interface clean and allows drainage to escape
- Do not rotate or advance the pin — manipulation destabilizes the pin-bone interface and introduces bacteria
- Leave pin sites open to air or apply a thin non-adherent dressing per protocol; occlusive dressings trap moisture
Signs of pin site infection / osteomyelitis
Report any of the following immediately: persistent redness or erythema extending beyond the pin site margins, warmth, purulent (cloudy, green, or foul-smelling) drainage, increased pin site pain, pin loosening, or fever. This is consistent with infection control surveillance principles applied to an orthopedic context.
External fixator care
External fixators are frames of rods and clamps that stabilize fractures percutaneously — each clamp connects to a pin in the bone. Care requirements mirror skeletal traction pin care, with additional considerations:
- The frame itself is not a weight-bearing structure unless the orthopedic surgeon explicitly clears the patient for weight-bearing through the fixator
- Educate the patient on how to protect the frame from household surfaces during transfers and ambulation
- Perform the full 5 Ps neurovascular check at each assessment — the same as any other orthopedic device
Hip and knee replacement nursing
Total hip arthroplasty (THA) and total knee arthroplasty (TKA) are two of the most common major surgical procedures in the United States — and among the highest-yield NCLEX orthopedic topics, particularly regarding post-operative precautions, dislocation recognition, and DVT prevention.
Total hip arthroplasty — posterior approach precautions
The posterior approach is the most common surgical approach for THA. It carries the highest dislocation risk because the posterior capsule and short external rotators are disrupted to gain access. The resulting precautions are designed to prevent the femoral head from slipping back out of the acetabulum through that weakened posterior wall.
The three movements to avoid are:
- Hip flexion greater than 90° — do not bend the hip beyond a right angle (no reaching for the floor, no low chairs, no bending to put on shoes)
- Internal rotation of the hip
- Adduction past midline — legs must not cross
Equipment to enforce these precautions:
- Raised toilet seat or commode extender — keeps hip above 90° when sitting
- Elevated chair or firm cushion — avoid low, soft chairs that tilt the pelvis into flexion
- Abductor pillow — placed between the legs in bed to prevent adduction; used during rolling and turning
- Reachers and sock aids — allow self-care without bending at the hip
These precautions typically remain in effect for 6–12 weeks with the posterior approach. The exact timeline depends on the surgeon’s protocol and the patient’s healing.
Anterior approach THA
The anterior approach preserves the posterior capsule and short external rotators. It therefore carries fewer dislocation precautions — in most cases, the 90° flexion restriction and internal rotation restriction are relaxed sooner or eliminated entirely. Adduction precautions may still apply early in recovery. Confirm the approach from the operative note before teaching.
Recognizing hip dislocation
Dislocation presents as:
- Sudden severe hip pain
- A palpable or audible “pop”
- The extremity appearing shorter than the contralateral side
- The extremity held in external rotation (posterior dislocation) or internal rotation (anterior dislocation)
Nursing response: do not attempt to relocate the hip. Immobilize the patient in the position of comfort, notify the surgeon immediately, and prepare for urgent reduction — in the operating room or under procedural sedation. Attempted field reduction risks neurovascular injury and fracture of the prosthetic components.
Connection to other joint disease: patients with rheumatoid arthritis or osteoarthritis are the primary population undergoing THA — understanding their disease trajectory provides context for why the procedure was necessary.
Total knee arthroplasty — key nursing priorities
Continuous passive motion (CPM) machine. Many TKA patients use a CPM device that slowly and continuously bends and extends the knee through a preset range of motion. The rationale is that gentle, repetitive joint movement promotes cartilage healing, prevents adhesion formation, and accelerates recovery of range of motion. The nurse sets the machine to the prescribed arc and confirms the knee fits properly in the cradle before initiating. The goal at discharge is typically 90° of knee flexion.
DVT prophylaxis — the highest-priority post-op complication. TKA carries one of the highest DVT risks of any elective procedure. The standard multi-modal approach includes:
- Sequential compression devices (SCDs) applied to the calves while in bed — confirm they are on and functioning at each assessment
- Pharmacologic anticoagulation (low-molecular-weight heparin, warfarin, or a direct oral anticoagulant) per protocol
- Early ambulation — patients typically stand with physical therapy on postoperative day 1
For detailed anticoagulation monitoring and DVT assessment priorities, see DVT nursing.
Ice, compression, elevation. A cryotherapy device or ice bags applied to the knee reduce pain and limit post-operative swelling. The knee is elevated above heart level during rest — the opposite of the compartment syndrome rule. Confirm by inspection that the SCD is not occluded by ice packs.
The postoperative nursing priorities of pain control, respiratory management, and early ambulation apply fully to all orthopedic surgical patients. Falls are a specific risk given altered weight-bearing status, opioid analgesia, and orthostatic hypotension — fall prevention nursing strategies are essential from arrival on the unit.
Discharge teaching
Discharge education in orthopedic nursing is a high-yield NCLEX domain because patient non-compliance is the leading cause of complications — dislocation from ignoring hip precautions, cast damage from getting it wet, and missed diagnoses from not reporting warning signs.
Weight-bearing status — the patient must know their classification
Every orthopedic patient must leave the hospital knowing their weight-bearing status precisely. The classifications are:
- NWB — non-weight-bearing: no weight on the extremity; crutches or walker required
- PWB — partial weight-bearing: a specified percentage of body weight allowed (typically 20–50%); provider will specify
- WBAT — weight-bearing as tolerated: patient advances weight based on pain level; common after TKA
- FWB — full weight-bearing: unrestricted
Patients who are unsure of their weight-bearing status are at high risk for falls — see fall prevention nursing for transfer and ambulation safety content.
Cast care at home
- Elevate the casted extremity for the first 24–48 hours post-application to control swelling
- Never insert any object inside the cast
- Report the following to the provider immediately: numbness or tingling, severe or worsening pain, inability to move fingers or toes, skin changes or odor at cast edges, cast cracking or softening
Hip precautions at home (posterior THA)
- Continue all posterior precautions for the surgeon-specified duration (typically 6–12 weeks)
- Use a raised toilet seat, high chair, shower bench, and reacher throughout this period
- Do not drive until cleared by the surgeon (typically 4–6 weeks for right hip replacement)
- No sexual activity until the surgeon clears it (hip precautions apply)
When to return immediately
Any orthopedic patient should return to the emergency department or contact their surgeon immediately for:
- Sudden increase in pain or pain that was improving and has worsened
- Numbness, tingling, or loss of movement in the extremity
- Fever over 38.0°C (100.4°F)
- Wound drainage, new redness, or warmth around an incision or cast edge
- Sudden severe pain with a pop sensation (suspect hip dislocation)
- Unilateral calf pain, swelling, or warmth (suspect DVT)
Patients with osteoporosis are at heightened fracture and re-fracture risk; teach bone health measures including calcium, vitamin D, fall prevention, and medication adherence at every orthopedic discharge encounter.
NCLEX-style practice questions
| Scenario | Correct action | Rationale |
|---|---|---|
| A patient with a tibial fracture in a plaster cast reports worsening pain and tingling in the toes. Pain is rated 9/10 and does not decrease after IV morphine. | Assess for pain on passive stretch; prepare to bivalve the cast; notify the provider STAT | Unrelenting pain unresponsive to opioids, plus paresthesia, meets the clinical threshold for suspected compartment syndrome. Immediate cast removal and provider notification are the priority actions before any further assessment. |
| The nurse notes that Buck's traction weights are resting on the floor after the patient repositioned themselves in bed. | Reposition the patient toward the head of the bed so weights hang freely; reassess alignment | Traction is ineffective unless the weights hang freely. Resting on the floor negates the therapeutic pulling force and allows fracture fragments to override. |
| A nurse suspects compartment syndrome in a patient's forearm. Which position should the nurse place the extremity? | At heart level — neither elevated nor dependent | Elevation would reduce arterial perfusion to an already-ischemic compartment. The extremity at heart level maintains the maximum perfusion gradient without worsening edema-driven compression. |
| A patient two days post-THA via posterior approach asks to use the recliner in the lounge. The seat is 14 inches from the floor. | Decline and arrange a higher chair; provide patient education on the 90° flexion precaution | Low chairs flex the hip beyond 90°, placing the posterior prosthesis at risk for dislocation. Standard seat height for posterior THA precautions should keep the hip at or above 90°. |
| A nurse is caring for a patient on skeletal traction for a femoral shaft fracture. Which assessment finding requires immediate notification of the provider? | Absent dorsalis pedis pulse on the affected side | Absent distal pulse indicates potential arterial compromise. This is a late and serious finding requiring emergent vascular assessment — provider notification cannot be delayed. |
| A post-TKA patient's SCD is off because the physical therapist removed it for ambulation. The patient has returned to bed and the nurse finds the SCD still off one hour later. | Reapply the SCD immediately | TKA carries high DVT risk. SCDs should be reapplied as soon as the patient returns to bed. Every hour without mechanical prophylaxis increases thrombotic risk in a high-risk surgical population. |
| A patient with a new plaster forearm cast reports itching. What is the safest intervention? | Use a blow dryer on the cool setting directed at the cast edges | Cool air reduces itching by stimulating skin surface thermoreceptors without the skin breakdown risk of inserting objects or the infection risk of topical applications under the cast. |
| A patient on Buck's traction for a right hip fracture slides toward the foot of the bed. Weights are hanging freely. What does the nurse do first? | Reposition the patient toward the head of the bed to restore counter-traction | The patient's body weight provides counter-traction. When the patient slides toward the foot, the counter-traction is lost and the traction force is negated — effective immobilization is no longer achieved. |
| The nurse is cleaning a skeletal traction pin site. Which technique is correct? | Clean from the pin outward in a circular motion using NS or chlorhexidine; do not rotate the pin | Outward technique prevents introducing skin contaminants toward bone. Rotating the pin destabilizes the pin-bone interface and can introduce organisms along the pin track. |
| A patient 3 hours post-THA (posterior approach) reports a sudden severe pop sensation in the right hip followed by severe pain. The right leg appears shorter and rotated outward. | Immobilize the patient in the current position; notify the surgeon immediately; do not attempt to relocate the hip | Shortened, externally rotated extremity with sudden pain is the classic presentation of posterior hip dislocation. Field manipulation risks neurovascular injury and hardware fracture — reduction is performed by the surgeon under controlled conditions. |
| The nurse is providing discharge teaching for a patient with a long arm plaster cast. Which statement by the patient indicates further teaching is needed? | "I can use a knitting needle inside the cast if it itches as long as I'm careful." | Any object inserted inside a cast can cause skin breakdown, pressure injuries, or introduce infection. This statement indicates the patient has not understood a key safety instruction — re-teach before discharge. |
| Compartment pressure is measured at 35 mmHg. The patient's blood pressure is 120/80 mmHg. What does the nurse recognize about this finding? | This is a surgical emergency — delta pressure is 45 mmHg, which is above 30 mmHg; however, compartment pressure alone at 35 mmHg exceeds the absolute threshold of 30 mmHg and warrants immediate fasciotomy | A compartment pressure >30 mmHg meets the absolute threshold. The delta pressure (diastolic 80 − compartment 35 = 45 mmHg) is above the 30 mmHg threshold in this case, but the absolute pressure alone mandates surgical consultation. In lower-BP patients, the delta pressure rule is more sensitive. |
Orthopedic nursing integrates physiology, anatomy, surgical care, and patient education into a coherent framework built around one central principle: neurovascular integrity comes first. Whether you are checking the 5 Ps on a fresh tibial cast, maintaining traction weights, teaching hip precautions, or applying an SCD after TKA, every action connects back to protecting tissue perfusion and preventing the complications — compartment syndrome, dislocation, DVT, infection — that are both clinically serious and NCLEX-tested. Master these principles and the scenario questions become pattern recognition.