双流动性与巨头 (≥40毫米) 在初级全关节整形术后:基于注册表的队列研究
Foster Chen1, Heather A Prentice2, Brian H Fasig2
1Department of Orthopaedic Surgery, Washington Permanente Medical Group, Seattle, WA, USA.
The Journal of arthroplasty
|March 4, 2026
概括
在全关节整形术 (THA) 中,双流动性 (DM) 和大头 (JH) 显示出类似的修订率. 脑膜炎减少了早期位,但可能增加了晚期位,没有观察到长期显著的差异.
科学领域:
- 整形外科手术 整形外科手术
- 生物材料科学 生物材料科学
- 临床流行病学临床流行病学
背景情况:
- 整体关节整形术 (THA) 的不稳定性是主要的并发症.
- 大的股骨头关节,如双流动性 (DM) 和大头 (JH,≥40毫米),用于提高稳定性.
- 由于复杂性,成本和故障模式的差异,DM和JH之间的比较是合理的.
研究的目的:
- 在初级全关节整形手术 (THA) 中,将双动力 (DM) 和大头 (JH) 之间的脱位和修复率的发生率进行比较.
- 为了评估DM与JH植入物的脱位的时间依赖风险.
- 评估二次结果,包括所有原因的修订,无菌修订和不稳定性修订.
主要方法:
- 一项基于美国注册的队列研究包括从2010年到2024年的9,532例初级THA病例 (1,716个DM,7,816个JH).
- 使用DM或JH与相容的乙烯基体组件的病例被选择,以最大限度地减少混.
- 倾向性得分加权的考克斯比例危险回归分析了六年后的脱位和修订风险.
主要成果:
- 在6年后,DM的粗脱位发生率为2.4%,JH为2.2%.
- 在4.25年之前,DM的脱风险较低 (HR:0.52),但在4.25年后风险更高 (HR:8.26).
- 在DM和JH之间,在所有原因,无菌性或不稳定性相关的修订风险方面没有发现显著差异.
结论:
- 双流动性 (DM) 使用与较少的早期位移有关,但可能有更多的晚期位移,尽管晚期差异很小.
- 在DM和JH之间没有发现修订率的显著差异,包括不稳定性.
- 目前的大型关节选择可能提供类似的长期结果,早期管理差异可能会影响修订率.
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