A method for arthroplasty includes using a self-locking prosthesis that has a member structured to transfer a load produced by the weight of a patient to a bone. An expandable bone-locking portion that is integral to the member includes a shape-memory material and expands to produce a locking force....http://www.google.de/patents/US8137486?utm_source=gb-gplus-sharePatent US8137486 - Proximally self-locking long bone prosthesis
