Function after through-knee compared with below-knee and above-knee amputation

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Abstract
Fifty-nine amuptees, 24 below-knee (BK), 17 through-knee (TK) and 18 above-knee (AK) who had prosthetic replacements, were evaluated using a questionnaire which provided a quantitative and qualitative assessment scale for the prosthetic function. The ability to apply or don the prosthesis was noted in 100% of the BK, 70% of the TK and 56% of the AK amputations (p < 0.001). Daily use of the prosthesis was recorded in 96% of the BK, 76% of the TK and 50% of the AK amputations (p < 0.001). A higher level of amputation resulted in a significantly lower degree of rehabilitation (p < 0.05). The qualitative evaluation shows that the higher the level of amputation, the lower the usefulness of the prosthesis. Four percent of the BK, 12% of the TK and 39% of the AK amputees had no use whatsoever of their prosthesis (p < 0.01). From a functional standpoint, TK amputation should always be considered as the primary alternative to AK amputation when a BK amputation is not feasible.

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