There were no significant differences in fracture alignment, hip screw position, tip-apex distance, union rate, time to healing or complication rate.
在骨折对线，螺钉位置，尖顶距，愈合率，愈合时间和并发症发生率方面无显著差异。
2
Objective To investigate the possibility of percutaneous cannulated lag screw fixation for treatment the injury of sacroiliac joint union under CT-guided.
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。
3
Based upon screw theory and set theory, the structural characteristics of lower-mobility parallel robots was studied via the union of limb constraints and the coupling of loop over-constraint.