[Medium-term results of osteotomy near the knee joint in the treatment of gonarthrosis (author's transl)].

271 osteotomies near the knee joint were performed between 1968 and 1977 at the Orthopedic Clinic of Tübingen University. The article reports on the results obtained in 69 patients who had been osteotomized because of gonarthrosis, out of a total of 135 patients, the results being evaluated after an average period of 4.9 years following the operation. The majority of these cases represented severe gonarthrosis. Indication, aim, planning and execution of the osteotomies performed near the knee joint, are discussed. Whereas angle plates are required in supracondylous osteotomy, clamps are sufficient in high supratubercular osteotomy of the tibia. In most cases it will not be necessary to perform more complicated osteosyntheses. The reasons are explained. In two-third to three-quarters of the cases, subjective improvement of complaints improved walking performance and standing ability are achieved. The relatively high incidence of complications is discussed.