Background: Osteonecrosis of femoral head is aseptic necrosis due to disruption of blood supply resulting in the death of bone cells. Core decompression is a standard procedure in treatment of early stage of Osteonecrosis femoral head in young. Bone grafting can potentially revitalize the necrotic zone and accelerate healing. To look for functional outcome of core de Aims: compression & autologous cancellous bone grafting in early stages of Osteonecrosis of head of femur. This is a prospective and inte Settings And Design: Material And Methods: rventional study. Patients with early stages (Ficat Arlet I and II) were treated with core decompression & autologous cancellous bone grafting and were followed up for 9 months. The results were evaluated on the basis HHS and VAS. GraphPad Statistical Analysis Used: and EpiInfo were used for calculating the statistical data. Young males with unilateral hip pain with durat Results: ion of symptoms less than 6 months and Grade II at presentation with no denitive cause were more common. There was signicant improvement in HHS and VAS postoperatively till nal follow up of 9 months. More patients had good HHS grade at 9 months. There was no complication during course of study. Core Decompression and Autologous Conclusion: bone grafting is a safe and effective treatment modality in early stages of osteonecrosis of femoral head in young. To look for Objectives: functional outcome of core decompression & autologous cancellous bone grafting in early stages of osteonecrosis of head of femur.