Mobility one year after unilateral lower limb amputation: a modern, UK institutional report

The aim of this current retrospective study was to assess postoperative mobility one year after above knee (AKA) or below knee amputation (BKA) in a district general hospital. Data on patient demographics, diabetic status, risks for peripheral vascular disease, mortality and mobility at one year were recorded from the vascular database. Seventy-five patients underwent lower limb amputation over a 70-month period (AKA n=31, BKA n=44). Operative mortality was 10% and mortality at one year 13.7%. Fourteen out of the 31 patients (45.1%) who underwent AKA were mobile independently or with a walking stick compared to 54.5% (24/44) in the BKA group (P=0.44). Fifteen patients (48.3%) were diabetic in the AKA group compared to 26 patients (59.1%) in the BKA group (P=0.49). In the under 60 years group and over 60 years group there was no significant difference in type of amputation (P=0.64) or mobility (P=0.69). In this current series, there was no significant rehabilitation benefits in patients undergoing BKA compared to AKA. With an ageing population who inherently have increasing significant medical problems, the perceived benefit in preserving the knee joint may not be as significant as previously reported.