The Mega-hip Prosthesis Surrounded by Allografts

Abstract

Reconstructive metal mega-hip prostheses are commonly used, but they might be responsible for mechanical failure or instability due to muscle non-fixation. One of the actual problems concerning articular allografting is the bio-mechanical behavior of the ligaments and the revascularization of the cartilage. We do not yet know the latest results concerning osteochondral allograft integration and cartilage evolution, especially at the hip side. Autologous grafts, unlike allogenic grafts, have an important osteogenic potential. But, inasmuch as the procurement volume is limited, they do not permit massive bone or joint reconstruction when there has been partial or total resection as a result of either a bone tumor or a posttraumatic lack of substance. For these reasons, we have elected since 1981 to use deep-frozen allogenic grafts to rebuild the skeleton.