Objective To discuss the method of constructingbiomechanical model of rabbit femur.Methods The sample of rabbit femur was prepared as follows:firstly，femur section images were obtained，then the image wasput into the computer and processed to get the boundary contour line; secondly, through programming the contour line coordinate for modeling was obtained, then the data were put into the model software to find the threedimensional entity model. Results Whole three-dimensional model of rabbit femur was constructed. It simulated actually dissection form of femur. Conclusion The establishment of the model lays a foundation for ascertaining optimal parameter of vibration improving bone minerydensity by finite element analysis.
【摘要】 目的 分析脑中心疝对脑出血患者预后的影响，明确早期判定的重要性。 方法 回顾分析2005年2月－2010年8月所有因脑出血行手术治疗的173例患者的临床资料，其中并发小脑幕切迹疝48例，并发脑中心疝37例。 结果 173例患者治愈97例，轻残25例，中残30例，持续植物状态2例，死亡19例；死亡原因：脑功能衰竭11例，颅内感染2例，肺功能衰竭2例，肾功能衰竭3例，弥散性血管内凝血1例。脑中心疝患者病死率（27.03%）高于非脑中心疝患者（6.62%），差异有统计学意义（χ2=10.393，P=0.001）。脑中心疝分期与GOS分级呈负相关关系（rs=-0.827，P=0.000），分期越早，GOS分级越高；脑中心疝存活的27例患者日常生活、活动分级与脑中心疝分期呈正相关关系（rs=0.630，P=0.000），分期越早，ADL分级越低。 结论 脑中心疝的早期判定可以减少患者并发症的发生，降低病死率及伤残率。【Abstract】 Objective To Analyze the effect of brain center hernia on the prognosis of cerebral hemorrhage patients, and clarify the importance of early judgment of brain center hernia. Methods The recorded data of 173 patients undergoing surgery for cerebral hemorrhage in our hospital from February 2005 to August 2010 were retrospectively analyzed. Among them, there were 48 cases of combined transtentorial herniation and 37 cases of combined brain center hernia. Results Among the 173 patients, 97 were cured, 25 were slightly disabled, 30 were moderately disabled, 2 were in persistent vegetative state (PVS), and 19 died. In the 19 dead patients, 11 died of brain function failure, 2 of intracranial infection, 2 of lung failure, 3 of renal failure, and 1 of disseminated intravascular coagulation (DIC). The mortality of patients with brain center hernia (27.03%) was significantly higher than that of non-brain center hernia patients (6.62%) (χ2=10.393, P=0.001). The period of brain center hernia was negatively correlated with GOS′s stage (rs=-0.827, P=0.000), and the earlier the period, the higher the GOS stage. The brain center hernia period in the 27 survival patients was positively correlated with their ADL stage (rs=0.630, P=0.000), and the earlier the period, the lower the ADL stage. Conclusion Early judgement of brain center hernia can reduce patients′ complications, their mortality and disability rate.