[Valgus osteotomy and lengthening of the femoral neck in secondary coxa vara in adolescents and adults].

Shortening of the femoral neck and proximal displacement of the greater trochanter are main problems of coxa vara after avascular necrosis of the capital epiphysis. In 24 patients an osteotomy to lengthen the femoral neck was performed to normalize the anatomic and functional situation. A clinical and radiological follow-up showed good or satisfactory results of the operation in 23 cases. Elimination or relief of pain and a negative Trendelenburg sign are important short-termed aims. Prevention or deceleration of degenerative changes in the hip joint are primary long-termed aims.