[Modified Küntscher's nail for the proximal femur fixation after corrective osteotomies in children (author's transl)].

The authors describe the development in the design of the modified Küntscher's nail with two fins on its upper part, assigned for the fixation of proximal femur after corrective osteotomies in children. Detailed explanation about the nails construction and its biomechanical characteristics are presented. The fixation of the nail in the proximal and distal femoral part, as well as on the site of osteotomy is particularly analyzed. On the base 423 operated cases, where the modified Küntscher's nail was applied, the authors conclusion is that the nail is very suitable for the correction of proximal femur deformities in children.