After which type of fracture is a total hip arthroplasty most likely needed?

Total hip arthroplasty is most likely needed after a displaced femoral neck fracture due to the complexity and increased risks associated with the injury. Displaced femoral neck fractures, particularly in older populations, often have poor healing potential and can lead to avascular necrosis of the femoral head when not properly managed. This can complicate recovery and can result in persistent pain and functional limitations.

In contrast, stable intertrochanteric fractures, nondisplaced femoral neck fractures, and subtrochanteric fractures may not always necessitate a total hip arthroplasty. Stable intertrochanteric fractures can often be effectively managed with internal fixation, allowing for adequate bone healing and rehabilitation without the need for joint replacement. Nondisplaced femoral neck fractures are usually treated conservatively or with fixation as the blood supply to the femoral head remains intact, enhancing healing. Subtrochanteric fractures, while they can be serious, typically do not require arthroplasty unless there are specific complications or if the patient has significant pre-existing joint pathology.

Overall, displaced femoral neck fractures represent a clear indication for total hip arthroplasty in appropriate patients, particularly when considering age, health status, and activity level