A nurse is assessing a client with a suspected fracture of the femur. Which assessment finding would be most indicative of a femoral fracture?

Shortening and external rotation are classic signs of a femoral fracture due to muscle spasm and displacement. Other options are less specific or indicate complications.

Core Nursing Explanation Key Concept Analysis: This question assesses your ability to recognize the classic, pathognomonic signs of a specific orthopedic injury—a Femoral fracture. The femur is the largest and strongest bone in the body. A fracture, especially of the shaft, causes significant displacement due to the powerful pull of the surrounding muscles (like the gluteal and iliopsoas muscles). The key is to identify the finding that is most directly and consistently caused by the bone displacement itself, rather than a potential secondary complication.

Answer Rationale: Key Point! Shortening and external rotation of the affected leg is the hallmark sign of a mid-shaft or proximal femoral fracture. Here's the pathophysiology: The fracture disrupts the bone's continuity. The powerful hip flexors (iliopsoas) and external rotators (gluteus muscles) go into spasm, pulling the proximal fragment upward and outward. This action causes the leg to appear visibly shorter and the foot to point outward (externally rotated). This is a direct, observable consequence of the fracture displacement.

Distractor Analysis:
Watch out for confusion! Option ②, Numbness and tingling in the toes, is a critical finding but indicates a complication—neurovascular compromise. It signals potential injury to the femoral nerve or vessels, making it a priority for monitoring, but it is not the most specific sign of the fracture itself.
Option ③, Swelling around the ankle joint, is nonspecific and more indicative of a local ankle injury. Swelling from a femoral fracture would be massive and localized to the thigh.
Option ④, Bruising on the lateral aspect of the knee, might suggest a direct blow to the knee (e.g., a lateral collateral ligament sprain or patellar fracture) but is not characteristic of a femoral shaft fracture, where bruising (ecchymosis) typically appears on the thigh and may track down the leg due to gravity.

Related Concepts: Always assess for the "6 Ps" of neurovascular status (Pain, Pallor, Pulselessness, Paresthesia, Paralysis, Poikilothermia) in any extremity injury to rule out compartment syndrome or vascular injury. A femoral fracture is also associated with significant risk of hemorrhage (can lose 1-1.5 liters of blood into the thigh) and fat embolism syndrome.

Nursing Clinical Practice Guide Clinical Scenario: You are a nurse in the Emergency Department. A 65-year-old female is brought in after a fall. She reports severe pain in her right thigh and cannot bear weight. On visual inspection, her right leg appears shorter than the left and the foot is turned outward.

Nursing Intervention Strategy: 1. Immediate Assessment & Stabilization (ABCs first): Ensure airway, breathing, circulation. A femoral fracture can cause hypovolemic shock from internal bleeding. Monitor vital signs closely for tachycardia and hypotension. 2. Focused Musculoskeletal Assessment: - Inspect: Look for the classic deformity (shortening, external rotation), swelling, bruising. - Palpate: Gently palpate for tenderness, crepitus (a grating sensation), and warmth. Do not attempt to realign the limb. - Neurovascular Checks: This is your ongoing priority. Assess distal pulses (dorsalis pedis, posterior tibial), capillary refill (Normal Value: < 3 seconds), sensation, and movement in the toes. Document findings meticulously. 3. Pain Management: Administer prescribed IV analgesics (often opioids) promptly. Pain from muscle spasm is severe. 4. Immobilization: The physician may apply a traction splint (e.g., Hare traction) in the ED to stabilize the fracture, reduce pain, and align the limb temporarily.

Patient Safety and Precautions: - Movement: Minimize movement of the affected limb. Log-roll the patient if spinal precautions are needed. - Compartment Syndrome: Be hyper-vigilant. Increasing pain unrelieved by medication, pain on passive stretch of the toes, paresthesia, pallor, and pulselessness are late signs. Report immediately. - Fat Embolism Syndrome: Monitor for dyspnea, hypoxemia, petechial rash (classically on the chest and axillae), and confusion 24-72 hours post-injury.

Nursing Procedure & Medication Flow Preparing for Traction Application: 1. Explain the procedure to the patient to reduce anxiety. 2. Gather equipment: traction splint, padding, straps. 3. Administer analgesia before the procedure. 4. Assist the provider by stabilizing the limb in its current position of deformity during application. Never pull or force alignment. 5. After application, re-assess neurovascular status. The traction should alleviate pain, not worsen it.

A Word from Your Senior Nurse "In the chaos of trauma, your eyes are your first assessment tool. Seeing that shortened, externally rotated leg should immediately trigger your 'femur fracture' protocol in your mind. But remember, the visible deformity is just the start. Your hands then check for pulses, and your words reassure the terrified patient. Managing this injury is a perfect example of combining textbook knowledge (the classic signs) with critical nursing judgment (prioritizing neurovascular checks and monitoring for shock). On the NCLEX, they love to test if you know the 'classic presentation' and then if you know the 'most urgent complication' to watch for. Master both."