Rotationplasty is an alternative surgical procedure to limb sparing surgery. The procedure is most commonly advocated for young patients with bone cancer of the the distal femur. It has been undertaken in older patients and in other skeletal locations such as the hip and shoulder.
For distal femoral tumours the procedure involves removing the section of cancerous bone. When a patient has cancer in a limb, he or she will usually undergo chemotherapy, radiation, and/or surgery first. The physician may recommend limb removal when it is no longer possible to save the limb or if the patient is skeletally immature. This can be done either through amputation or through Van Ness rotationplasty. [Via: implantsforchildren.com]