Evaluating the risk factors for Lubinus SP II femoral stem fractures: A case series of 5 primary total hip arthroplasty patients with a mean follow-up of 7.5 years

评估 Lubinus SP II 型股骨柄骨折的危险因素：一项对 5 例初次全髋关节置换术患者进行平均 7.5 年随访的病例系列研究