Which type of fracture commonly affects the femur in the lower extremities?

A femoral neck fracture is a specific type of fracture that occurs in the proximal part of the femur, just below the ball of the hip joint. This type of fracture is particularly common in older adults, often due to falls or low-impact trauma. The femoral neck is crucial for weight-bearing activities, and injuries to this area can lead to significant complications, including impaired mobility and the potential for avascular necrosis if blood supply is compromised.

Understanding the anatomy of the femur helps to clarify why femoral neck fractures are a concern. The femur consists of a long shaft and two ends, with the neck being the narrow area immediately below the head that connects to the shaft. Fractures in this area typically require careful management, often involving surgical intervention, due to the risk of non-union and other complications associated with this type of injury.

In contrast, the other types of fractures listed do not primarily involve the femur or are located at different sites in the lower extremities, making them less relevant to the specific question about fractures affecting the femur.