1. Objective: To observe and measure the Sacro-iliac joint and correlative parts for clinical reference in Hemipelvic dislocation internal fixation by double head hollowed screw.
目的：通过骶髂关节及相关的解剖观测，为半盆脱位骶髂关节穿钉固定术提供临床应用依据。
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2. Objective: To observe and measure the Sacro-iliac joint and correlative parts for clinical reference in Hemipelvic dislocation internal fixation by double head hollowed screw.
