目的：比较三种不同直径人骨拉力螺钉的剪切和扭转性能。
To compare the cutting and reversing property of there different diameter conicalpulling-screws.
方法：手术先将髂内外动脉做血流控制术后，行骨折复位、松质骨拉力螺钉固定共2 1例。
Method:After controlling the blood flow of the internal and external iliac arteries in 21 cases, the fractures were reduced and fixed with lag-screws of cancellous bone.
目的探讨在CT引导下经皮微创技术置入松质骨拉力螺钉内固定治疗骶髂关节复合体损伤的可行性。
Objective To investigate the possibility of percutaneous cannulated lag screw fixation for treatment the injury of sacroiliac joint union under CT-guided.
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