Treatment of Osteonecrosis of Femoral Head with Lightbulb-shaped Lesion Clearance with Compact Bone Graft

Abstract：Objective To explore the preliminary efficacy of lightbulb-shaped lesion clearance with compact bone graftin the treatment of femoral head necrosisMethods 32 patients(39 hips)of femoral head osteonecrosis were treated with light-bulb-shaped lesion clearance with compact bone graft in Weifang Traditional Hospital from 2011. 05 to 2012. 09,followed up for 2 years. According to the ARCO staging system,there were 29 hips of stage Ⅱ,10 hips of stage Ⅲa. All patients were eval-uated both clinically and radiographically at 3,6,9 months post operation and annually. Functional improvement was assessed with the Harris hip score. Results According to the Harris hip score system,there were excellent results in 21 hips,good in 69 hips,fair in 6 hips and poor in 3 hips. The mean pre-operative and post-operative Harris scores were(70. 21 ± 7. 36)and (85. 50 ± 9. 87),respectively,with a mean improvement of 15. 29 points(P ﹤ 0. 01). Almost all hips were radiologically sta-ble,with no progress of osteonecrosis,and bone density in the bone graft area increased obviously. Conclusion The lightbulb operation do not damage the blood supply of the femoral head with minimally invasivion,completely clearance and full decom-pression. Additionally,the porous bioceramic β-tricalcium phosphate which was planted into the femoral head can play a sup-porting role in the lateral column of the necrotic area. In sum,The lightbulb operation has good curative effect on early and mid stage of the femoral head osteonecrosis.