目的探讨髋臼后柱的解剖学结构及其相关临床意义。
Objective to investigate the anatomical structures of the posterior column of the acetabulum and the related clinical significance.
目的：探讨髋臼在其前、后柱上的投影和螺钉放置的安全范围。
Objective: to investigate the X-ray projection of acetabulum on its anterior and posterior column and to develop a safe area for screw placement.
目的：探讨髋臼后柱的解剖学结构和螺钉放置的安全角度和范围。
Objective: to investigate the anatomical structures of the posterior column of the acetabulum and to develop a safe path for screw placement into it.
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