[Alloplastic replacement of the anterior cruciate ligament. Material technical and biomechanical principles, surgical technique].

The Trevira-ligament of Polyaethylenter-ephthalat (= Trevira-hochfest 730) seems to be the best qualified replacement of the anterior cruciate ligament at the present. It meets all material and technical requirements and makes allowances for all biomechanical knowledges. The modified over-the-top-technique by arthroscopy or mini-arthrotomy (minimal operative trauma) makes it possible to conserve still existing ligamentous and soft tissue and guarantees the post-operative immediate functional therapy. A potential reinstability--independent of each cause--doesn't imply worse starting conditions and enables corrections including the substitute of a ruptured synthetic ligament.