A 45-year-old construction worker is brought to the emergency department after falling from scaffolding and landing on his right side. He reports severe pain in his right hip and is unable to bear weight. Which assessment finding would be MOST indicative of a hip fracture?

External rotation and shortening of the affected leg is the classic and most definitive sign of a hip fracture, particularly a femoral neck fracture.

Core Nursing Explanation Key Concept Analysis: This question assesses the ability to identify the most specific physical sign of a hip fracture, specifically a femoral neck fracture. The mechanism involves a high-impact trauma (fall) disrupting the integrity of the proximal femur. The classic deformity occurs because the fracture disrupts the normal pull of muscles attached to the femur, causing the leg to rotate outward and appear shorter.

Answer Rationale: Key Point! External rotation and shortening of the affected leg is the most pathognomonic (definitive) sign for a displaced hip fracture. The shortening is due to muscle spasm (like the iliopsoas) pulling the fracture fragments upward. The external rotation occurs because the fracture disrupts the joint capsule, allowing the weight of the foot to turn the leg outward. This finding is highly specific and immediately raises suspicion for a serious fracture requiring urgent intervention.

Distractor Analysis: - Watch out for confusion! Bruising and swelling (Option 1) are common with any significant trauma or soft tissue injury but are not specific to a fracture. They can occur with severe contusions or muscle tears. - Inability to perform straight leg raises (Option 2) indicates pain and possible muscle weakness, but it is not diagnostic. A patient with severe pain from any cause (e.g., muscle strain, bursitis) may also be unable to lift the leg. - Severe pain with any movement (Option 4) is a sensitive finding (it will be present) but lacks specificity. It is expected with many traumatic injuries, including fractures, dislocations, and severe sprains, and does not pinpoint the anatomical problem.

Related Concepts: In trauma assessment, nurses must differentiate between general signs of injury (pain, swelling) and specific, definitive signs of serious injury (deformity, crepitus, neurovascular compromise). The priority after identifying a likely fracture is to immobilize the joint and assess for neurovascular status (circulation, sensation, movement) distal to the injury. Concept Summary - Hip Fracture (Femoral Neck Fracture): Common in older adults with osteoporosis, but also in high-impact trauma. - Classic Triad for Suspected Hip Fracture: 1) History of trauma/fall, 2) Inability to bear weight, 3) Affected leg is shortened and externally rotated. - Nursing Priorities: Pain management, immobilization, prevention of complications (deep vein thrombosis (DVT), pressure ulcers, pneumonia), and preparation for likely surgical intervention (open reduction internal fixation (ORIF) or hemiarthroplasty). Side-by-Side Comparison!

Assessment Finding	Indicates	Why It's Not the "Most" Indicative for Hip FX
External Rotation & Shortening	Displaced Hip Fracture (e.g., Femoral neck)	N/A - This is the correct, definitive sign.
Bruising/Swelling	Soft tissue injury, Contusion, Hematoma	Non-specific; present in many injuries.
Inability to Straight Leg Raise	Pain, Muscle weakness, Nerve injury (e.g., femoral nerve)	Functional test, not a structural diagnostic sign.
Severe Pain on Movement	Significant injury (Fracture, Dislocation, Severe Sprain)	A symptom, not a specific physical sign of deformity.

Anatomy, Physiology & Pharmacology Points - Anatomy: The femoral neck is a common fracture site. The iliopsoas muscle attaches to the lesser trochanter; its spasm pulls the distal fragment upward, causing shortening. - Pathophysiology: Fracture disrupts blood supply to the femoral head, risking avascular necrosis (AVN). - Pharmacology: Immediate pain management often involves IV opioids (e.g., morphine). Post-op, anticoagulants (e.g., enoxaparin) are crucial for DVT prophylaxis. Memory Tips - Mnemonic for Hip Fracture Signs: "Short & Out" (The leg is Shortened and turned Outward). - Think of a classic textbook picture: The patient lying in bed with one foot pointing noticeably outward compared to the other. High-Frequency NCLEX Topics This is a Core topic for musculoskeletal and geriatric nursing. The NCLEX loves to test: 1. Identifying the definitive sign of a condition (like this question). 2. Post-operative care and complications after hip fracture surgery (e.g., preventing dislocation by maintaining abduction, avoiding hip flexion >90 degrees). 3. Priority assessments (neurovascular checks) for a patient with a fracture. Watch Out for Question Variations! - Instead of "most indicative finding," the question could ask: "The nurse identifies a potential complication when the patient reports sudden chest pain and dyspnea 3 days post-op." (Answer: Pulmonary embolism (PE) from DVT – a major complication). - Or: "To maintain proper alignment after hip replacement surgery, the nurse should place the patient in which position?" (Answer: Abduction with an abductor pillow, avoiding internal rotation and adduction).

Nursing Clinical Practice Guide Clinical Scenario: Mr. Johnson, 72, is admitted to your orthopedic unit after a fall at home. He has a confirmed right hip fracture and is scheduled for surgery tomorrow morning. He is on bed rest with Buck's traction applied for comfort and alignment.

Nursing Intervention Strategy: 1. Assessment: Perform frequent neurovascular assessments (CMS): Check Circulation (capillary refill, pedal pulses, color/temperature), Movement (toes), and Sensation (light touch on foot). Document any changes. Assess pain using a numeric scale. 2. Pain Management: Administer scheduled and PRN analgesics as ordered. Reposition carefully, supporting the entire leg. 3. Pre-op Preparation & Education: Reinforce deep breathing and coughing exercises to prevent atelectasis. Explain the surgical procedure and post-op mobility restrictions (e.g., "hip precautions"). 4. Post-op Care: Maintain abduction, log-roll for turning, use a raised toilet seat and chair. Monitor incision site, drains, and vital signs. Aggressively prevent DVT with sequential compression devices (SCDs) and anticoagulants.

Patient Safety and Precautions: - Never flex the hip >90 degrees, adduct, or internally rotate the operative leg after a total hip arthroplasty (THA). - Be vigilant for signs of compartment syndrome (severe pain unrelieved by meds, pallor, paresthesia, pulselessness, paralysis) – though more common in long bone fractures, it's a critical emergency. - Monitor for signs of fat embolism syndrome (FES) – confusion, petechial rash, respiratory distress – especially in the first 72 hours. Nursing Procedure & Medication Flow Procedure: Applying Buck's (Skin) Traction 1. Explain the procedure to the patient. 2. Clean and dry the skin on the affected leg. 3. Apply foam traction boots or adhesive strips along the medial and lateral aspects of the leg. 4. Secure the traction rope to the spreader bar and run it over a pulley at the foot of the bed. 5. Hang the prescribed weight (usually 5-10 lbs). Ensure the weight hangs freely, not touching the bed or floor. 6. Check the skin under the boot every 2-4 hours for redness or breakdown.

Medication: Enoxaparin (Lovenox) for DVT Prophylaxis - Action: Low molecular weight heparin (LMWH); inhibits Factor Xa. - Dose/Route: Typically 40 mg subcutaneously (SQ) once daily. - Key Nursing Point: Administer in the abdomen, at least 2 inches from the umbilicus. Do not aspirate or massage the site. Rotate sites. Monitor for signs of bleeding (bruising, hematuria, tarry stools). A Word from Your Senior Nurse "In the chaos of the ED or on a busy ortho floor, spotting that classic 'shortened and externally rotated' leg is a moment of critical recognition. It tells you instantly that this isn't just a bad bruise – it's a life-changing fracture that needs a swift, systematic response. Your role goes beyond identifying it. You're the one ensuring that leg stays immobilized, that the pain is controlled, and that you're constantly checking those toes for circulation. You're also the patient's coach and advocate through a tough recovery. Remember the 'why' behind every intervention – why we use abductor pillows, why we give blood thinners, why we log-roll. That understanding transforms you from a task-doer into a thinking, protective nurse, which is exactly what the NCLEX and, more importantly, your future patients, need you to be."