Transfemoral
Pronunciation: trans-FEM-er-ul
Describing an amputation or prosthetic fitting at a level above the knee, through the femoral shaft, with loss of the knee joint; the preferred clinical term replacing 'above-knee amputation' in modern PM&R documentation.
Full Definition
Transfemoral is the standardized anatomical descriptor for amputations performed through the shaft of the femur, resulting in loss of the knee joint, historically referred to as 'above-knee amputation (AKA).' In PM&R and prosthetics literature, 'transfemoral' is the preferred modifier for describing the amputation level, the residual limb, and the associated prosthesis. Transfemoral amputation results in greater energy expenditure during prosthetic ambulation compared with transtibial amputation and typically requires a prosthetic knee unit, adding complexity to both the device and the rehabilitation process. Editors should consistently use 'transfemoral' in formal documents, flag 'AKA' as informal, and avoid the ambiguous 'above-knee' in clinical manuscripts.
Usage
Usage note: Preferred over 'above-knee' or 'AKA' in formal PM&R text. Do not hyphenate. 'AKA' is also a common English abbreviation ('also known as') and should be avoided in clinical documents for this reason alone.
In Context
- "Transfemoral prosthetic fitting was delayed by four weeks owing to post-surgical oedema of the residual limb." — Rehabilitation discharge summary
- "The author's use of 'AKA' was flagged and replaced with 'transfemoral amputation' per the journal's terminology guidelines." — Editorial review note