What is the recommended surgical management for a 70-year-old woman with osteoporosis who has a non-displaced sub-capital (trans-cervical) fracture of the left femoral neck?

Surgical Management for Non-Displaced Femoral Neck Fracture in a 70-Year-Old with Osteoporosis

For this 70-year-old woman with osteoporosis and a non-displaced subcapital femoral neck fracture, you have three reasonable options: internal fixation, hemiarthroplasty, or nonsurgical care—but given her age and osteoporosis, I recommend proceeding with internal fixation using multiple screws or a sliding hip screw, while accepting that hemiarthroplasty is also a valid choice if you want to minimize reoperation risk. 1

The Evidence Framework

The 2022 AAOS guidelines explicitly state that for stable (non-displaced) femoral neck fractures, all three approaches—hemiarthroplasty, internal fixation, or nonsurgical care—may be considered, but this is listed as a "Limited" strength option, meaning the evidence is not strong enough to make a definitive recommendation 1. This puts you in clinical decision-making territory where patient factors become critical.

Decision Algorithm

Step 1: Assess Patient Activity Level and Medical Fitness

• If she is active, ambulatory, and medically fit for surgery → Proceed with surgical intervention
• If she is non-ambulatory or has severe medical comorbidities → Consider nonsurgical management (though this carries higher morbidity/mortality risk)

Step 2: Choose Between Fixation vs. Arthroplasty

Choose Internal Fixation if:

• Patient is relatively active and you want to preserve the native joint
• Shorter operative time is desired (reduces anesthetic exposure)
• Lower infection risk is prioritized
• Patient accepts 6-8% reoperation risk 2, 3

Choose Hemiarthroplasty if:

• You want to minimize reoperation risk (fixation has 3.5x higher reoperation rate) 2
• Patient has very severe osteoporosis (BMD is a key risk factor for fixation failure) 3
• Immediate mechanical stability is preferred
• Patient/family cannot tolerate potential for revision surgery

Critical Caveat: The Osteoporosis Factor

The osteoporosis diagnosis in this patient is crucial. Recent 2025 data shows that bone mineral density (BMD) is an independent risk factor for reoperation after internal fixation 3. In patients with severe osteoporosis and very low hip BMD, the reoperation rate increases significantly with fixation. If her DEXA scan shows severe osteoporosis (T-score < -3.0), this tilts the decision toward hemiarthroplasty.

If You Choose Internal Fixation

• Use multiple screws or a sliding hip screw construct 4
• Newer constructs like the femoral neck system (FNS) show promise with stronger axial/rotational stability 3
• Achieve anatomical reduction (slight valgus is acceptable) 5
• Operate within 24-48 hours of admission 1
• Accept that reoperation rates are 6-9% even in well-selected patients 2, 3

If You Choose Hemiarthroplasty

• Use a cemented femoral stem (strong AAOS recommendation to reduce periprosthetic fracture risk, especially critical in osteoporotic bone) 1
• Either unipolar or bipolar head is acceptable (moderate recommendation—they're equally beneficial) 1
• This provides immediate mechanical stability and dramatically reduces reoperation risk (RR = 0.28 compared to fixation) 2
• Trade-off: longer operative time, more blood loss, higher transfusion rates 2

Perioperative Optimization (Applies to Either Approach)

• Anesthesia: Either spinal or general is appropriate (strong recommendation) 1
• Timing: Surgery within 24-48 hours of admission improves outcomes (moderate recommendation) 1
• Tranexamic acid: Administer to reduce blood loss and transfusion needs (strong recommendation) 1
• Multimodal analgesia: Include preoperative nerve block (strong recommendation) 1
• Interdisciplinary care: Involve orthogeriatrics/hospitalist team to decrease complications (strong recommendation) 1
• No preoperative traction (strong recommendation against) 1

The Real-World Clinical Decision

In practical terms for this specific patient: If her BMD is moderately low (T-score -2.0 to -2.5) and she's reasonably active, internal fixation is defensible and preserves her native joint. However, if her BMD is severely low (T-score < -3.0) or she's frail with limited physiologic reserve, hemiarthroplasty with a cemented stem is the safer choice to avoid the 3.5-fold higher reoperation risk that comes with fixation in osteoporotic bone.

The key pitfall to avoid: Don't choose fixation in severe osteoporosis just because the fracture is non-displaced. The displacement status matters less than the bone quality in predicting fixation failure 3.