Retrieval of a Sunken Interference Screw during Core Decompression and Autologous Adult Live-cultured Osteoblast Injection for Bilateral Hip Avascular Necrosis: A Case Report

双侧髋关节缺血性坏死患者行髓芯减压术及自体成人活培养成骨细胞注射治疗中，取出沉入的干涉螺钉：病例报告