【摘要】 [目的]探讨轴向应力调节在延长区骨愈合中的作用。[方法]采用微型环式外固定延长器,对40只兔分两组进行胫骨延长,并对其骨延长区行X线片,骨密度及组织学检测。[结果]操作结束后,两组延长区骨痂X线片表现不同:对照组延长区中央部可见骨痂连续但皮质未形成,实验组除可见骨痂连续外,还有连续的皮质及髓腔贯通。[结论]骨延长结束后采用轴向应力调节及周期性持续微动短缩加压可促进骨愈合。更多还原

【Abstract】 [Objective]To explore the effects of axial stress regulation on healing of lengthened callus.[Method]Tibiaes of 40 rabbits divided into 2 groups were lengthened with circular external fixator.X-ray bone density and histology tests were performed.[Result]The X-ray showed lengthened callus was different after operation.In the control group,lengthened center had a serial callus and cortex had not formed,in the experimental group lengthened center had serial cortex and ttransfixial medullary cavity expects serial callus.[Conclusion]Axial stress regulation and periodicity continue to shortened micromovement stress may promote healing after bone lengthening.更多还原