[Surgical treatment of gonarthrosis deformans in middle-aged and elderly patients].

For treatment of deforming gonarthrosis in old and senile patients the authors developed and successfully applied extra-articular surgical methods. In stage I-II of the disease--prolonged osteotomy of the tibial bone was made; in disorders of the extremity axis--the correcting osteotomy of the tibial bone was made. According to the authors' opinion restorative treatment in the postoperative period is very important.