Valgus osteotomy fork plate fixation

Eccentric osteotomy plate fixation for the treatment of congenital hip varus. Congenital hip varus, also known as developmental hip varus, is a congenital bone malformation that progressively reduces the neck dry angle of the proximal femur. In 1881, Fiorani first reported that the disease was a hip deformity of the femoral neck flexion of the baby; in 1894 Hofmeister called it a hip varus; in 1896 Kvedel named it congenital hip varus. The incidence of the disease accounts for about 1/25000 of the newborn, often involving both sides. Curing disease: Indication 1. The neck dry angle is <110°. 2. Age > 5 years old. Contraindications 1. The neck dry angle is >110°. 2. Age <4 to 5 years old. 3. Pseudo joint formation. Preoperative preparation 1. Take a double hip joint X-ray positive position and measure the neck dry angle, HE angle and related values. 2. Draw a pattern for surgical design, prefabricate the angle of the steel plate and determine the position of the plate into the femoral neck. The insertion portion is preferably located between the axis of the femoral neck and the inner edge line. Based on the HE angle <20°, it is predetermined to correct the degree of the neck dry angle, that is, the degree of the valgus osteotomy. Surgical procedure 1. Incision and exposure The proximal longitudinal incision of the thigh was taken, and the proximal femur and the large trochanteric tarsal were exposed under the periosteum. 2, insert steel plate Under the fluoroscopy, the guide needle was drilled into the femoral neck at the distal end of the large trochanteric iliac crest 0.5-1.0 cm; the forked steel plate was struck into the femoral neck by a parallel guide needle under the guide needle at the designed spacing. 3, proximal femoral valgus osteotomy Parallel between the plate insertion portion and the first screw hole and the guide pin determine the upper line of the osteotomy, and the length of the bottom edge of the triangular bone block is determined by the outer turn to determine the lower osteotomy line, and the chainsaw is osteotomized. 4, forked steel plate fixed The distal end of the osteotomy was moved 1/4 outward and abducted at the same time to make it suitable for the angle of the prefabricated steel plate, and the screw was fixed; a small triangular bone piece was wedged into the triangular gap of the steel plate and the osteotomy.