摘要
利用光弹性实验方法，对ＮＴ－ＰＣ作用于冠状面二维髌骨模型产生的应力分布及纵、侧向聚合力进行了分析。结果表明，回复压缩力以纵向为主（３０～４０Ｋｇ），侧向为辅（５～７．５Ｋｇ）。临床应用４０００例，疗效显示：伤膝关节的伸屈功能达到健膝功能的时间是２．５～２０周，平均７．１４周，未发生术后感染、再骨折、骨不连、骨坏死和膝功障碍等并发症。ＮＴ－ＰＣ不但适用于各种类型的髌骨骨折，而且可有利于避免部分与全髌切除，是一种简便、有效的髌骨骨折治疗新方法。
The stress distribution and concentrated forcein the longitudinal and lateral directions produced by Nitinol Patellar Concentrator (NT-PC) in the Two-dunensional patella model were analyzedusing by using the method of photoelasticity.The results showed that the memory compression mainly comes frorri the longitudinal direction (30￣40Kg)and partially from the lateral direction (5￣7.5Kg).NT-PC was employed in 4, 000 cases.It turns out that the time needed for the affected knee to bendstretch like the opposite healthy knee is 2.5￣20 weeks,with a mean of 7.14 weeks. There were no complications of postoperative infection, refracture,necrosis,non-union or functional impediment in the injured knee jonts.It is noteworthy that NT-PC not only adaptable to various kinds of patellar fracture but also advantageous to avoiding'partial or total patellectomy'.It is a simple and effective new-method for treatment of patellar fracture.
出处
《医用生物力学》
CAS
CSCD
1995年第2期36-39,35,共5页
Journal of Medical Biomechanics
关键词
髌骨
骨折
形状记忆合金
内固定
聚合加压
patellar fracture
shape memory alloy
internal fixation
biomechanics
