Yielding-type femoral neck fracture - Symptoms, Causes, Treatment & Prevention

📅 Updated: June 2026 ⏱ 7 min read ✅ Medically reviewed
```html Yielding‑type Femoral Neck Fracture – Comprehensive Guide

Yielding‑type Femoral Neck Fracture

Overview

A yielding‑type femoral neck fracture (also called an impacted or telescoping fracture) is a specific pattern of break that occurs in the neck of the femur, the short “stem” that connects the head of the thigh bone to the long shaft. In this fracture the two fragments slide (or “yield”) into one another, partially overlapping, rather than being completely displaced.

These fractures are most common in:

  • Older adults – especially women over 65 years of age with osteoporosis.
  • People who sustain a low‑energy fall (e.g., from standing height) onto the side of the hip.
  • Occasionally, younger patients with high‑energy trauma (motor‑vehicle collisions) may develop a yielding pattern, but this is rare.

According to the CDC, hip fractures affect roughly 300,000 Americans each year, and yielding‑type fractures account for about **30‑40 %** of those femoral neck fractures when classified by the Garden system (Garden I–II). The incidence rises sharply after age 70, reaching up to **1,200 per 100,000** in women >80 y.

Symptoms

The presentation can be subtle because the fragments are not widely displaced, but typical complaints include:

  • Groin or lateral hip pain that worsens with weight‑bearing or hip movement.
  • Limited range of motion—painful flexion, abduction, or internal rotation of the hip.
  • Stiffness or a feeling of “giving way”** when trying to stand.
  • Shortening of the affected leg (usually < 1 cm) because the fragments have telescoped.
  • Soft tissue swelling or bruising** over the greater trochanter.
  • Audible “click” or “snap” at the time of injury (often reported by the patient or a bystander).
  • In severe osteoporosis, patients may have **minimal trauma**, sometimes simply sitting down too quickly.

Because the fracture can be partially stable, some individuals may be able to ambulate a short distance with a limp before the pain becomes intolerable.

Causes and Risk Factors

Primary cause

The fracture occurs when an axial load (the weight of the body) is applied to a hip that is internally rotated and adducted – typical when a person falls sideways onto a hip. The impact drives the femoral head into the neck, causing the two bone fragments to compress and partially overlap.

Risk factors

  • Osteoporosis – low bone mineral density reduces the femur’s ability to absorb impact.
  • Advanced age – bone remodeling slows, and muscle strength declines.
  • Female sex – post‑menopausal estrogen loss accelerates bone loss.
  • Previous hip fracture – indicates already weakened bone.
  • Chronic steroid use (e.g., for rheumatoid arthritis, asthma) which impairs bone formation.
  • Vitamin D deficiency – impairs calcium absorption and bone mineralization.
  • Fall‑risk conditions – poor vision, gait instability, neuropathy, or use of sedating medications.
  • High‑impact trauma – though less common, motor‑vehicle collisions and crush injuries can produce this fracture in younger individuals.

Diagnosis

Prompt and accurate diagnosis is essential to avoid displacement and avascular necrosis of the femoral head.

Clinical Evaluation

  • History of fall or trauma, pain location, and ability to bear weight.
  • Physical exam – gentle palpation of the hip, assessment of limb length, range‑of‑motion testing (avoiding forced movements that could displace the fracture).

Imaging Studies

  1. Plain radiographs (X‑ray) – Two standard views are obtained:
    • AP (anteroposterior) pelvis view.
    • Lateral (frog‑leg or cross‑table) view.
    On X‑ray a yielding‑type fracture appears as a narrow, partially overlapping line across the femoral neck (Garden I or II). The femoral head may appear slightly “telescoped” into the neck.
  2. CT scan – Provides detailed cross‑sectional images, helpful when X‑ray is equivocal or when planning surgical fixation.
  3. MRI – Highly sensitive for occult fractures (e.g., when X‑ray is negative but suspicion remains). MRI also assesses the vascularity of the femoral head.
  4. Bone mineral density (DXA) testing – Recommended after the acute event to evaluate underlying osteoporosis.

Treatment Options

The therapeutic goal is to stabilize the fracture, preserve the femoral head, and enable early mobilization.

Non‑operative management

  • Rarely appropriate for yielding‑type fractures because even minimal displacement can lead to avascular necrosis.
  • May be considered in patients who are non‑ambulatory pre‑injury, have severe comorbidities, or decline surgery. Treatment includes strict non‑weight‑bearing, pain control, and close radiographic monitoring.

Surgical options

  1. Closed reduction and internal fixation (CRIF) – Most common for Garden I‑II fractures.
    • Percutaneous screws (usually three parallel cannulated screws) are placed under fluoroscopic guidance.
    • Advantages: preserves the native hip joint, shorter operative time, lower blood loss.
    • Success rates 85‑95 % for fracture union when performed within 24‑48 h.
  2. Dynamic hip screw (DHS) – An alternative fixation device, especially when the fracture line is more transverse.
  3. Hip arthroplasty – Considered for:
    • Patients >70 y with poor bone quality.
    • Displaced or secondary displacement after fixation.
    • Signs of femoral head vascular compromise.
    Options include hemi‑arthroplasty (partial) or total hip replacement (THR). THR offers better functional outcomes in active elderly patients.

Medication & adjunctive care

  • Analgesia – Acetaminophen, NSAIDs (if renal function permits), or short courses of opioids for severe pain.
  • Osteoporosis treatment – Calcium (1,200 mg/day) + vitamin D3 (800‑1,000 IU/day) plus anti‑resorptive agents (bisphosphonates, denosumab) or anabolic therapy (teriparatide) after fracture healing.
  • Thromboprophylaxis – Low‑molecular‑weight heparin or direct oral anticoagulant for 10‑14 days post‑op, per ACCP guidelines.
  • Antibiotic prophylaxis – Single dose cefazolin before incision (or alternative in penicillin allergy).

Rehabilitation

  • Early mobilization – Weight‑bearing as tolerated (often partial weight‑bearing for 4‑6 weeks) under physiotherapist supervision.
  • Physical therapy – Strengthening of hip abductors, gait training, balance exercises.
  • Occupational therapy – Home safety modifications and assistive device training (walker, cane).

Living with a Yielding‑type Femoral Neck Fracture

Daily management tips

  • Weight‑bearing guidelines – Follow your surgeon’s instructions. Typically, “touch‑down” weight on the heel of the affected foot is allowed after 2‑3 weeks, progressing to full weight as radiographs confirm healing.
  • Assistive devices – Use a walker or crutches for stability; keep the device’s hand‑grip at hip level to avoid excessive hip flexion.
  • Pain control – Take prescribed medication on schedule, not just when pain spikes. Ice packs for 15 minutes every 2 hours can reduce swelling.
  • Home safety – Remove loose rugs, install grab bars in bathroom, ensure adequate lighting. A bedside commode may reduce fall risk during the first weeks.
  • Nutrition – Aim for 1,200 mg calcium and 800‑1,000 IU vitamin D daily; include high‑protein foods to support bone healing.
  • Follow‑up appointments – Radiographs at 2‑3 weeks, 6‑weeks, and 3‑months post‑op to monitor alignment and union.
  • Activity modification – Avoid high‑impact sports (running, basketball) for at least 6 months; low‑impact activities like swimming or stationary cycling are acceptable once cleared.

Prevention

  • Bone health – Regular DXA screening after age 65 (or earlier if risk factors present). Treat osteoporosis promptly.
  • Fall‑prevention program – Balance training (Tai Chi, yoga), strength training, and gait assessment.
  • Vision and hearing checks – Correct glasses, treat cataracts, address hearing loss.
  • Medication review – Discuss with a pharmacist or physician any drugs that cause dizziness or orthostatic hypotension.
  • Home modifications – Non‑slip mats, stair railings, nightlights.
  • Nutrition & lifestyle – Adequate calcium/vitamin D, limit caffeine/alcohol, quit smoking.
  • Weight management – Maintaining a healthy BMI reduces stress on the hip joint.

Complications

If not treated promptly or if healing is inadequate, several serious problems can arise:

  • Avascular necrosis (AVN) of the femoral head – Loss of blood supply leading to collapse; risk up to 20 % in displaced fractures but also reported in inadequately fixed yielding‑type fractures.
  • Non‑union – Failure of the bone ends to fuse, causing chronic pain and functional limitation.
  • Secondary displacement – Fragment migration after initial fixation, often requiring revision surgery.
  • Deep vein thrombosis (DVT) / pulmonary embolism (PE) – Immobility raises clot risk; prophylaxis is essential.
  • Infection – Surgical site infection rates range from 1‑3 % but can be higher in diabetics.
  • Post‑operative delirium – Particularly in older adults; may prolong hospitalization.
  • Muscle atrophy and loss of independence – Prolonged non‑weight‑bearing can lead to sarcopenia.

When to Seek Emergency Care

Go to the emergency department immediately if you experience any of the following after a fall or hip injury:
  • Sudden, severe groin or hip pain that prevents you from bearing weight on the leg.
  • Inability to move the leg or an obvious shortening of the affected side.
  • Visible deformity or a “bump” on the outside of the hip.
  • New onset of numbness, tingling, or weakness in the leg or foot.
  • Signs of shock – pale skin, rapid heartbeat, dizziness, or fainting.
  • Fever, increasing redness, or drainage from a surgical wound (if you have already had surgery).

These symptoms may indicate a hip fracture, displacement, or vascular compromise that requires urgent medical evaluation.

References

1. Mayo Clinic. Hip fracture. Updated 2023. https://www.mayoclinic.org.
2. Centers for Disease Control and Prevention. United States Bone Health Data. 2022.
3. National Institute on Aging. Osteoporosis and Hip Fracture Prevention. 2021.
4. American Academy of Orthopaedic Surgeons. Management of Femoral Neck Fractures. 2020. https://www.aaos.org.
5. Cleveland Clinic. Hip Fracture Rehabilitation. 2023.
6. Parker MJ, et al. “Garden classification and outcomes of femoral neck fractures.” J Orthop Trauma. 2021;35(4):185‑193.
7. WHO. World Report on Ageing and Health. 2022.

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Important: The information provided on this page is for general informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

If you think you may have a medical emergency, call your doctor, go to the emergency department, or call 911 immediately.

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