计忠伟;包倪荣;赵建宁;

• 1:南京大学医学院临床学院
• 2:南京军区南京总医院骨科

摘要(Abstract)：

[目的]通过显微计算机断层扫描(micro-computed tomography,Micro-CT)检测胫骨平台软骨下骨小梁显微结构,分析膝关节骨性关节炎(osteoarthritis,OA)与类风湿性关节炎(rheumatoid arthritis,RA)患者骨小梁的显微结构。[方法]收集人工全膝关节置换术(total knee arthroplasty,TKA)中截取的OA及RA患者胫骨平台,用Micro-CT扫描标本的内、外侧胫骨平台软骨下骨小梁,获得显微结构参数进行分析比较。[结果]膝关节骨性关节炎患者内侧胫骨平台软骨下骨小梁的骨体积分数(BV/TV)、骨小梁厚度(Tb.Th)、骨小梁数目(Tb.N)大于类风湿性关节炎内侧胫骨平台软骨下骨小梁,骨表面积体积比(BS/BV)、骨小梁间隔(Tb.Sp)、结构模型指数(SMI)、各项异性的程度(DA)则小于类风湿性关节炎内侧胫骨平台软骨下骨小梁;而外侧胫骨平台软骨下骨小梁,骨性关节炎的BS/BV、Tb.Th、Tb.N大于类风湿性关节炎,Tb.Sp和DA则相反。膝关节骨性关节炎内侧胫骨平台软骨下骨小梁的BV/TV、Tb.Th、Tb.N大于其外侧,BS/BV、Tb.Sp、SMI小于其外侧。而类风湿性关节炎内侧胫骨平台软骨下骨小梁的BV/TV、Tb.Th小于其外侧。BS/BV、SMI、DA与其他显微结构参数间存在着相关关系。[结论]膝关节骨性关节炎与类风湿性关节炎及两种疾病的内、外侧胫骨平台软骨下骨小梁显微结构存在差异,这对人工膝关节假体的力学环境分析有一定的指导作用。

关键词(KeyWords)： 骨性关节炎;类风湿性关节炎;骨小梁;Micro-CT

Abstract:

Keywords:

基金项目(Foundation): 江苏省科技项目(编号:BK2012776)

作者(Author): 计忠伟;包倪荣;赵建宁;

Email:

DOI:

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