[Experience on Guepar-hinge-prosthesis (author's transl)].

Total replacement of the knee joint by the G.U.E.P.A.R. hinge prosthesis has been performed in 72 patients suffering from severe gonarthrosis combined with ligamentous instability. Follow-up examination over a period of 1/2-5 years were made in 65 cases considering pre- and postoperative findings (pain, range of motion, ability to walk). This paper reports on problems of joint replacement surgery especially on details of operative technique to restore free gliding of the patella and muscular force as well. The G.U.E.P.A.R hinge posthesis has given good or excellent results in the great majority of cases.