In 1947 the Committee on Artificial Limbs of the National Research Council1 estimated the incidence of major extremity amputations at 40,000 annually. Thus rehabilitation of the amputee is an important medical problem, and much is being done to improve prosthetic appliances and develop better technics of training the amputee in the functional use of such devices. To date little or no attention has been directed at the biomechanical effect of replacing the anatomic part lost with an artificial limb weighing less than the extremity amputated. This condition holds in the majority of the prosthetic devices now available on the open market. The purpose of this study was to explore this problem as it affects the lower extremity amputee.
CLINICAL MATERIAL AND METHODS
The subjects of the investigation were 42 adults, 24 of whom were lower extremity amputees. Of these, 3 had sustained bilateral lesions, 8 had lost one extremity