The standard for early degenerative processes such as menisci damage, early traumatic damage or cartilage defects, is endoscopic knee joint surgery. The method is established like none other and has been practiced for 30 years. Endoscopic surgery of the joint can be supplemented by several other methods. Not only can damaged structures by removed during this procedure, but it is also possible to reconstruct menisci or ligaments. Transplantation of cartilage, too, is of high value.