针刀干预对中期膝骨关节炎兔软骨下骨压缩力学性能的影响Effect of Acupotomy Intervention on Compressive Mechanical Properties of Subchondral Bone in Medium-term KOA Rabbits
王军美,秦露雪,陈烯琳,钟红刚,刘聪,尹孟庭,郭长青
摘要(Abstract):
目的 研究针刀对中期膝骨关节炎(KOA)兔软骨下骨压缩力学性能的影响。方法 24只新西兰雄兔随机分为空白组、模型组、针刀组和电针组。除空白组外,其余3组采用改良后Videman法制动9周建立模型,分别干预3周。采用蕃红O/固绿染色法光镜下观察各组兔膝关节软骨及软骨下骨病理改变,参照Mankin评分标准对软骨退变程度进行评分,对软骨下骨进行压缩力学性能测试,观察最大位移、最大载荷、压缩强度和弹性模量。结果 1)蕃红O/固绿染色及Mankin评分:模型组显示软骨层明显变薄,结构紊乱破坏,软骨下骨板明显增厚,Mankin评分明显升高(P <0.01);针刀组、电针组染色情况改善,Mankin评分显著降低(P <0.01);针刀组与电针组相比,Mankin评分较低,两组间差异有统计学意义(P <0.01)。2)压缩力学测试:模型组软骨下骨最大位移、最大载荷、压缩强度和弹性模量显著降低(P <0.01);针刀组、电针组最大位移、最大载荷、压缩强度、弹性模量显著升高(P <0.01或P <0.05),针刀组和电针组之间差异无统计学意义(P> 0.05),但针刀组趋势更接近正常。结论 针刀干预可改善KOA兔软骨下骨承受压缩载荷和抗变形的能力,从而延缓KOA进程。
关键词(KeyWords): 膝骨关节炎;针刀;软骨下骨;生物力学;兔
基金项目(Foundation): 北京市自然科学基金面上项目(7192110)
作者(Author): 王军美,秦露雪,陈烯琳,钟红刚,刘聪,尹孟庭,郭长青
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