Femoral Neck Fractures: Fixation vs. Replacement & Latest Research – 2026

Femoral neck fractures, breaks in the upper part of the thighbone near the hip joint, are a growing concern as populations age. Approximately 300,000 hip fractures occur annually in the United States, with half classified as femoral neck fractures according to the CDC. Treatment options have evolved, shifting from traditional fracture fixation to hip replacement – either a hemiarthroplasty or a total hip arthroplasty – due to concerns about high complication rates with fixation. But the optimal approach remains a subject of debate among orthopedic surgeons.

Evaluating the Fracture and the Patient

Determining the best course of action isn’t straightforward. Surgeons must carefully evaluate both the characteristics of the fracture itself and the individual patient’s condition. “Not all [femoral neck fractures] are created equal,” explains J. Tracy Watson, MD, professor of orthopedic surgery at St. Louis University School of Medicine. Assessment includes detailed X-rays, looking for factors like displacement, comminution (fragmentation of the bone), and any pre-existing arthritis in the hip.

Beyond the fracture pattern, a patient’s activity level and pre-injury hip pain are crucial considerations. While age is a factor, surgeons are increasingly focusing on bone quality rather than chronological age. Frank A. Liporace, MD, chair of orthopaedic surgery at Cooperman Barnabas Medical Center, notes that physiological health can vary greatly. “Many people are much more physiologically intact than they have been decades ago,” he says, adding that some younger individuals may have poorer bone quality than older, healthier patients.

Fixation Versus Replacement: A Continuing Debate

The central question remains: fix the fracture or replace the hip joint? Robert T. Trousdale, MD, professor of orthopedic surgery at the Mayo Clinic, outlines the key controversies: “fix or replace…if you replace, do you replace with a partial replacement—a hemiarthroplasty—or a complete replacement? And if you do a replacement, do you use cement or uncemented fixation?” While data exists to guide these decisions, no single answer fits all cases.

Historically, internal fixation was common, but it carries a significant risk of complications. Joseph T. Patterson, MD, associate professor at Keck Medicine of the University of Southern California, points out that around 30% of older adults with displaced femoral neck fractures require a second operation after initial fixation. This is particularly true when bone quality is poor, hindering screw fixation. “These older adults are the patients who do better if we get them up and get them walking and moving,” Patterson explains.

This has led to a shift towards hip replacement, but even then, the choice between hemiarthroplasty (replacing only the femoral head) and total hip arthroplasty (replacing both the femoral head and the acetabulum, or hip socket) remains complex. The decision often depends on the patient’s overall health and activity level. A less active patient in a nursing home might benefit from a hemiarthroplasty, while a more active individual might be better suited for a total hip replacement.

Potential Complications with Fixation

Fixation, while potentially successful, isn’t without its risks. Nonunion – where the fracture fails to heal – is a major concern. Richard S. Yoon, MD, fellowship director at the OrthoComplex Reconstructive Institute, emphasizes that surgeons must be prepared for the possibility of needing to convert to arthroplasty if fixation fails.

Avascular necrosis, where the blood supply to the femoral head is disrupted, is another potential complication. Trousdale notes that even if fixation initially succeeds, the risk of avascular necrosis remains high with displaced fractures, potentially leading to the need for a later replacement. Fixation can sometimes result in leg length discrepancies or asymmetry in hip function, potentially impacting a patient’s gait and daily activities.

Considerations with Hip Replacement

Hip replacement, while often more reliable, also carries its own set of potential complications. Yoon highlights the risk of infection, which is generally higher with arthroplasty due to the presence of metal implants. Periprosthetic fracture – a fracture around the implant – is another concern, particularly with uncemented implants. Dislocation is also a risk, though more common with total hip arthroplasty than hemiarthroplasty.

Patterson also notes that patients who undergo hemiarthroplasty may experience wear on the contralateral (opposite) side of the acetabulum over time. While the timing of this wear varies, studies suggest it may not become clinically significant for many years, particularly in lower-demand patients.

Ongoing Research and the FASTER HIP Trial

To better understand the optimal treatment approach, researchers are conducting studies like the FASTER HIP trial, funded by the Patient-Centered Outcomes Research Institute (PCORI). This trial is randomly assigning 600 patients with minimally displaced femoral neck fractures to either arthroplasty or internal fixation, with the goal of identifying which approach leads to the best outcomes in terms of mortality, ambulation, and quality of life. More information about the FASTER HIP trial can be found on the PCORI website.

The study allows surgeons and patients to collaboratively decide between a total or partial hip replacement, or various fixation methods, tailoring the approach to individual needs.

The Importance of Early Mobilization

Regardless of the chosen treatment – fixation or replacement – one principle remains consistent: early mobilization is crucial. Yoon emphasizes the importance of getting patients up and moving as soon as possible after surgery. “Even the simple act of standing up from a seated position works out everything in the core down to the knees,” he says. The goal is to prevent complications, promote healing, and support patients regain their independence.

Liporace stresses the need for a thorough evaluation of X-rays and the patient’s functional status before making a treatment decision. Each approach carries its own unique set of risks and benefits, and the best choice depends on a careful consideration of individual circumstances.

For more information, you can contact the physicians mentioned in this article:

• Frank A. Liporace, MD: [email protected]
• Joseph T. Patterson, MD: [email protected]
• Robert T. Trousdale, MD: [email protected]
• J. Tracy Watson, MD: [email protected]
• Richard S. Yoon, MD, FAOA, FIOTA: [email protected]