Management of Femoral Neck Fracture in Above Knee Amputee with Femoral Neck System: A Case Report

Femoral neck fractures in patients with a history of above knee amputation present as a strain for orthopedic surgeons due to the difficulty of positioning and handling of the limb for proper reduction. Surgical treatment options typically involve open reduction internal fixation versus arthroplasty depending on patient factors such as age, surgeon skill, and available equipment.

We present a case of a femoral neck fracture (OTA 31-B2) in a relatively active 89-year-old Caucasian male after a ground level fall that has been ambulating with a prosthesis since his teenage years. In this report, we describe the patient positioning, technique used to treat a femoral neck fracture (OTA 31-B2) using the femoral neck system, and the successful outcome of our patient 1 year from the injury.

We conclude that using the femoral neck system (FNS) is a viable option for patients with a high above knee amputation where, due to the length of the limb and potentially the lack of appropriately sized implants, dislocating and reducing the hip for total hip arthroplasties and hemiarthroplasties provide a challenge.