Outcomes of direct superior approach and posterolateral approach for hemiarthroplasty in the treatment of elderly patients with displaced femoral neck fractures: A comparative stud... by Wei Hu, Wen-Bo Xu, Hao Li, Wen-Hua Jiang, Yin-Chu Shao, Ji-Chun Shan, Di Yang, De-En Wan, Feng Shuang

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