One of the most common problems in the treatment of pediatric patients with various disorders of the hip joint is the formation of deformity of the proximal femur, such as abnormal growth of the greater trochanter, which causes it to be positioned high in relation to the femoral head. This condition is called "relative overgrowth of the greater trochanter" (ROGT).

Inclusion Criteria:

• emerging deformities of the proximal femur with a high position of the greater trochanter, in which its apex was located above the center of the femoral head but below its superior pole; changes in the structure of the femoral neck, accompanied by its shortening; functioning growth zone of the greater trochanter at the time of intervention; and patients without surgical treatment history

Exclusion Criteria:

• hip dislocation upon examination; patients with varus deformity of the femoral neck (neck-shaft angle <120°), patients with complications of surgical interventions, trauma, rickets, and rheumatoid arthritis; and patients with neurological disorders and Refusal to participate in this study

The patients come to the outpatient clinic and underwent clinical and radiological examination will be done , then preparation to surgery by screw