全膝关节置换后下肢力线及假体力线与疗效和假体松动率的关系

被引:13
作者
杨硕
冯硕
徐崇俊
唐金龙
裴方
查国春
陈向阳
机构
[1] 徐州医科大学附属医院骨科
关键词
膝关节置换; 膝骨关节炎; 冠状面; 下肢力线; 膝关节活动度、美国特种外科医院评分; 髋-膝-踝角; 股骨假体角; 胫骨假体角;
D O I
暂无
中图分类号
R687.4 [关节手术];
学科分类号
100220 [骨科学];
摘要
背景:对于全膝关节置换后最佳下肢力线的争议仍然较多,而国内对于下肢力线与临床疗效关系的研究较少。目的:分析膝骨性关节炎患者全膝关节置换后下肢力线(髋-膝-踝角)、股骨假体力线(股骨假体角)、胫骨假体力线(胫骨假体角)与临床疗效、假体松动率的关系。方法:回顾性分析2015年3月至2016年12月初次行全膝关节置换的膝关节骨性关节炎患者118例(139膝),所有患者对治疗方案均知情同意,且得到医院伦理委员会批准。摄患肢下肢全长X射线片、测量置换前后股骨胫骨机械轴夹角(髋-膝-踝角)、股骨假体远端内侧角(股骨假体角)、胫骨假体近端内侧角(胫骨假体角)。术后定期随访膝关节活动度、美国特种外科医院评分评价全膝关节置换后临床疗效。随后根据最新随访复查X射线片,采用EWALD标准查找假体松动、骨溶解、断裂的迹象。分析全膝关节置换后下肢力线(髋-膝-踝角)、股骨假体力线(股骨假体角)、胫骨假体力线(胫骨假体角)与临床疗效、假体松动率的关系。结果与结论:①118例(139膝)均获得随访,随访时间(35.8±6.2)个月,未发现假体松动、骨溶解、断裂的迹象;②对于下肢力线,中立组与内翻组、外翻组置换后美国特种外科医院评分差异有显著性意义(P<0.05),且中立组评分最高;③对于股骨假体力线,只有中立组与外翻组之间置换后美国特种外科医院评分差异有显著性意义(P <0.05),且中立组评分更高;④胫骨假体力线3组间置换后美国特种外科医院评分差异无显著性意义(P>0.05);⑤提示传统全膝关节置换后中性力线[下肢力线中立组髋-膝-踝角=(180±3)°]依然为全膝关节置换后推荐的恢复力线,应当尽量避免术后内、外翻力线。短期随访中,全膝关节置换后下肢力线及假体力线对假体松动无影响。
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页码:3780 / 3785
页数:6
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