Stumped by the Mystery: A Case Report of Progressive Shortening of Bone Following an Above-Knee Amputation.

Several studies have investigated the anatomical adaptations in amputation stumps. In this study, we present a case report of a patient who underwent an above-the-knee amputation and, over the course of time, the length of the residual bone spontaneously shortened. The patient had undergone a total hip replacement in the same leg, and the cement mantle of the hip replacement, which could be seen within the medullary canal in the early postoperative X-rays, protruded due to bone resorption one year after the amputation Although changes in bone microarchitecture in amputation stumps are well established, this is the first report of macroscopic changes in its actual length.