[Endoprosthetic replacement of the ankle joint]

Endoprosthetic replacement of the ankle joint is considered to be a modern alternative of the well-tried fusions of the joint. We try to explain indications and limits of alloarthroplasty in comparison to arthrodesis. The recent technical evolution will be presented: starting with the two-component-("first generation") and leading to the three-component ("second generation") designs, Suitable for cemented and cementless implantation as well. Results of three-component endoprostheses in the literature and our own experiences with implants of both generations especially regarding the time of survival will be discussed. Basing on the actual knowledge, we try to deduce a prognosis of the future way of ankle replacement.