Acute Femoral Neck Fracture


Key Points

  • Bipolar/monopolar hemiarthroplasty treatment for displaced femoral neck fractures is best in the elderly population with comorbidities.

  • Total hip arthroplasty for displaced femoral neck fractures is best in healthier, more active, and younger patients for management of displaced femoral neck fractures.

  • Modern treatment protocols for displaced femoral neck fractures decrease complications.

  • Cemented femoral stem fixation for displaced femoral neck fractures improves outcomes by decreasing some important intraoperative and postoperative complications.

  • Surgical technique for treatment of displaced femoral neck fractures with arthroplasty is presented.

Femoral neck fractures are a worldwide epidemic. However, the incidence of these fractures and mortality associated with them have declined owing to improvements in preventive medicine. Nevertheless, most comorbidities among these patients have increased. The cost to society for treating these fractures is staggering. Managing these fractures cost-effectively with good outcomes and minimal complications—for individual patients as well as health care delivery systems—is paramount. Alternative payment models are now prevalent in the United States, with Centers for Medicare Services now including hip fractures in Comprehensive Care for Joint Replacement (CJR) and Bundled Care Payment Initiative (BCPI) models for global episodes of care in an attempt to decrease costs and drive efficient pathway models.

A number of studies report successful implementation of alternative care models. Froemke's group recently reported on their experience developing and initiating a bundled payment project within a hospital system that resulted in decreased length of stay (LOS) and increased discharge to home. Iorio's group reported midterm results from the implementation of Medicare BPCI Model 2 for primary total joint arthroplasty and demonstrated decreased LOS, discharge to inpatient facilities, readmissions, and cost of the episode of care in year 3 compared with year 1. Overall, the program increased value to all stakeholders involved in the initiative, suggesting that continued improvement over initial gains is possible. Another BCPI study revealed that groups with well-defined clinical pathways had decreased LOS, better discharge disposition (generally to home), and decreased costs compared to groups that did not have clearly defined pathways. Importantly, these new alternative care models demonstrate improvements in care by outcomes while also decreasing the cost of this care.

Treatment Options for Nondisplaced Femoral Neck Fractures

Management of femoral neck fractures requires that the surgeon clearly define whether the fracture is displaced or nondisplaced. This necessitates adequate radiographs in 2 views. An anteroposterior (AP) pelvis and lateral radiograph of the affected hip are essential to allow the surgeon to determine whether the fracture is displaced. Assessing the opposite hip on the AP radiograph is important for preoperatively planning the size and placement of screws, blade plate, compression hip devices, or intramedullary nails in internal fixation cases. Similarly, in arthroplasty cases, the contralateral hip is important for templating the stem and cup.

Usually, nondisplaced or valgus impacted femoral neck fractures in elderly patients (> 65 years) are treated with percutaneous pinning with 3 or 4 screws. Displaced fractures require a decision about whether to perform hemiarthroplasty (HA) or total hip arthroplasty (THA). Anatomic reduction is the single most important factor in preventing failure after open reduction internal fixation (ORIF). Fractures left in varus have a high failure rate and will most likely require revision surgery regardless of age or comorbidities. ORIF may require preventing early weight bearing and mobilization, potentially increasing medical morbidity. However, arthroplasty ordinarily allows immediate weight bearing and mobilization of the elderly patient with a displaced fracture and is the topic of focus for the remainder of this chapter.

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