老年移位型股骨颈骨折行髋关节置换术与内固定失效后再行髋关节置换术的疗效对比
노년이위형고골경골절행관관절치환술여내고정실효후재행관관절치환술적료효대비
Comparison of the effect between the hip replacement and the hip replacement after failed internal fixation in elderly patients with displaced femoral neck fracture
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