[Juvenile epiphyseolysis of the femoral head--coxa vara development and treatment].

Children's coxa vara is based on epiphyseolysis of the proximal femoral epiphysis due to relative overload of a primarily healthy metaphysis, or to a "normal" load on diseased structures. These give passively way in the direction of varus and retroversion of the head in the presence of fatigue fractures. Etiologically the idiopathic C. vara infantum can be differentiated from the symptomatic forms with known causes. Broadening of the epiphyseal line, spur formation and cystic bone resorption of the medial-caudad portions of the metaphysis are early x-ray signs. When the process involves the whole metaphysis, with C. vara, one ought to strive for a good straightening of the femoral neck and head by operation, if a specific treatment, based on etiology, does not provide for a spontaneous correction of C. vara.