欢迎来到天天文库
浏览记录
ID:33732441
大小:1.80 MB
页数:40页
时间:2019-02-28
《胫骨内侧平台塌陷骨折对膝关节接触应力的影响》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中文摘要400.500N的轴向牵张力,增加膝关节的间隙,又不破坏关节囊、侧副韧带及交叉韧带等组织,将包裹密封好的内外侧平台压敏片从前向后置入关节间隙、半月板的下方。卸载牵张力后以40N/s的速度轴向加压至700N,在峰值位置保持5s,然后卸载,每个模型重复两次。分别在胫骨内侧平台内侧1/2塌陷0、l、2、3mm时,得到压敏片着色压迹,用FPD305E密度仪读取压迹区密度值(在压迹区均匀读取9个点),将实验中的温度和相对湿度输入FPD306E压力转换器,自动转换后得到应力值,计算出平均接触压力,得出膝关节主要负重区域的接触应力的变化。实验数据结果应用SP
2、SS13.0软件进行统计分析(P≤O.05有显著统计学意义)。结果:根据测量结果计算骨折塌陷不同高度时胫骨关节面的平均接触应力,实验数据用单因素方差进行统计学分析。测得胫骨内侧平台塌陷0mm、lmm、2mm、3mm时外侧平台平均接触应力分别为:3.34±0.06MPa、3.48±O.06MPa、4.19±0.06MPa、4.19±0.04MPa,内侧平台平均接触应力分别为:4.04±0.17MPa、4.57±0.20MPa、5.64±0.20MPa、5.64±O.19MPa;数据均符合正态性检验和方差齐性检验,然后进行单因素方差分析,当胫骨内侧平台塌陷
3、lmm时,外侧平台的接触应力与塌陷0mm相比增加了4.2%(P>O.05),差异无统计学意义,塌陷2mm时,#t-{91U平台的接触应力与塌陷0mm相比增加了25.4%(PO.05),差异无统计学意义,塌陷2mm时,内侧平台的接触应力与塌陷0mm相比增加了39.6%(P4、mm相比增加了39.9%(P5、ssuresforFracturesoftheMedialTibialPlateauABSTRACTObjectives:Fractureoftibialplateauisakindofcomplicatedintra—articularfracture,normallyoriginatedfromhigh·energyinjuries.Goalsoftreatmentofproximaltibialarticularfracturesincluderestorationofarticularcongruity,axialalignment,joint6、stability,andfunctionalmotion.Afterthearticularsurfacesofajointhavebeenfractured,jointfunctionusuallyisproportionatetotheaccuracyofreduction.Fordisplacedfractures,mostauthorspointoutthatthemostsignificantfactorinfluencinglong—termresults,andhencetreatmentapproach,isthedegreeofdi7、splacementanddepression.Recently,thedegreeofacceptablearticulardisplacementiscontroversial.Tibialplateaufractureisthetypicalarticularfracture,andareoftencombinedligament,meniscus,andnerveinjury.Tibialplateaufractureisusuallydividedintotwocategories,simpleandcomplextibialplateauf8、racture,differenttypesoffracturesandtreatmentma
4、mm相比增加了39.9%(P5、ssuresforFracturesoftheMedialTibialPlateauABSTRACTObjectives:Fractureoftibialplateauisakindofcomplicatedintra—articularfracture,normallyoriginatedfromhigh·energyinjuries.Goalsoftreatmentofproximaltibialarticularfracturesincluderestorationofarticularcongruity,axialalignment,joint6、stability,andfunctionalmotion.Afterthearticularsurfacesofajointhavebeenfractured,jointfunctionusuallyisproportionatetotheaccuracyofreduction.Fordisplacedfractures,mostauthorspointoutthatthemostsignificantfactorinfluencinglong—termresults,andhencetreatmentapproach,isthedegreeofdi7、splacementanddepression.Recently,thedegreeofacceptablearticulardisplacementiscontroversial.Tibialplateaufractureisthetypicalarticularfracture,andareoftencombinedligament,meniscus,andnerveinjury.Tibialplateaufractureisusuallydividedintotwocategories,simpleandcomplextibialplateauf8、racture,differenttypesoffracturesandtreatmentma
5、ssuresforFracturesoftheMedialTibialPlateauABSTRACTObjectives:Fractureoftibialplateauisakindofcomplicatedintra—articularfracture,normallyoriginatedfromhigh·energyinjuries.Goalsoftreatmentofproximaltibialarticularfracturesincluderestorationofarticularcongruity,axialalignment,joint
6、stability,andfunctionalmotion.Afterthearticularsurfacesofajointhavebeenfractured,jointfunctionusuallyisproportionatetotheaccuracyofreduction.Fordisplacedfractures,mostauthorspointoutthatthemostsignificantfactorinfluencinglong—termresults,andhencetreatmentapproach,isthedegreeofdi
7、splacementanddepression.Recently,thedegreeofacceptablearticulardisplacementiscontroversial.Tibialplateaufractureisthetypicalarticularfracture,andareoftencombinedligament,meniscus,andnerveinjury.Tibialplateaufractureisusuallydividedintotwocategories,simpleandcomplextibialplateauf
8、racture,differenttypesoffracturesandtreatmentma
此文档下载收益归作者所有