Background: Legg Calve Perthes disease is a juvenile os‌teonecrosis, where the blood supply of femoral head not sufficient leading to the provisional bone death. It is a main cause of premature osteoarthritis of the hip, and also need hip replacement in early adulthood. Many treatment methods were used in Legg Calve Perthes disease to keep hip joint range of motion. Aim of the work: the current study was aimed to evaluate the outcomes of femoral varus osteotomy in the treatment of Perthes disease according to classification and grading schemes. Patients and methods: This study was carried out at the Orthopedic Surgery outpatient clinic of Zagazig University Hospital during the period from January 2017 to June 2019 on 12 patients, they were (7 males) and (5 females) with range between 5 to 10 years. Results: showed that there was a Significant decrease in the mean epiphyseal extrusion indices, Significant increase mean Wiberg's CE angle, significant decrease in the mean of neck shaft angel and union of osteotomies within 3 months without fixation loss. Conclusion: proximal varus osteotomy was a confident treatment in patients without flattening of femoral head, advanced deformation and in case of good containment in abduction and internal rotation especially if their ages ranged between 5-10 years. For older patients and patients with advanced deformity of femoral head the outcomes were not satisfactory.