[Injuries to the knee extensor system in patients with longterm hemodialysis].

Types and causes of renal osteodystrophy in chronic (3-12 years, hemodialysed patients are presented. Tissue weakening due to osteodystrophy resulted in 6 extensor mechanism lesions in 4 patients. Two quadriceps tendon avulsions, 1 patellar fracture, 2 patellar tendon avulsions involving the tip of patella and 1 patellar tendon rupture occurred. Pathomorphology and course of surgical treatment has been discussed. Good functional results have been achieved.