Transfemoral Amputation
Pronunciation: trans-FEM-or-ul
Amputation performed above the knee, through the femur, removing the lower leg and knee joint.
Full Definition
A transfemoral amputation, historically referred to as an above-knee (AK) amputation, involves the removal of the limb through the femoral shaft, resulting in loss of the knee joint. Prosthetic rehabilitation for transfemoral amputees requires a prosthetic knee unit in addition to a socket, pylon, and terminal device, making it more complex than transtibial prosthetics. Editors working on rehabilitation outcome studies, insurance appeals, and surgical reports will encounter this term frequently. 'Transfemoral' is preferred in formal documentation over 'above-knee.'
Usage
Usage note: Prefer 'transfemoral' over 'above-knee' in formal and peer-reviewed documents. The abbreviation AK is acceptable in informal clinical notes.
In Context
- "The patient underwent a transfemoral amputation and was subsequently referred to the prosthetics clinic for a microprocessor knee evaluation." — Referral letter
- "The insurance documentation consistently used 'above-knee amputation' where the preferred clinical term is 'transfemoral amputation.'" — Insurance prior authorization document