固定承载式全膝关节置换术的聚乙烯嵌体固定稳定,聚乙烯磨损率低,随访五至六年。

IF 4.7 2区 医学 Q2 CELL & TISSUE ENGINEERING
Jonathan H Jürgens-Lahnstein, Emil T Petersen, Søren Rytter, Frank Madsen, Kjeld Søballe, Maiken Stilling
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引用次数: 0

摘要

目的:除了全膝关节置换术(TKA)的关节磨损外,聚乙烯(PE)嵌体的微动也可能导致后侧聚乙烯磨损。我们使用聚乙烯嵌体中的钽珠进行放射性立体计量分析(RSA),评估了聚乙烯微动及其与聚乙烯磨损的关系:共有 23 名患者,平均年龄为 83 岁(77 至 91 岁),均来自于一项关于 Maxim 胫骨组件(Zimmer Biomet)的骨水泥 TKA 的 RSA 研究。通过负重立体显像对PE内衬移位、PE磨损、胫骨组件移位和膝关节解剖轴线进行了评估。PE内衬的磨损程度以股骨组件最深穿透PE内衬的程度来衡量:在平均六年的随访中,PE磨损率为0.08毫米/年(95%置信区间为0.06至0.09毫米/年)。PE嵌体的外旋低于精度限值,不会影响PE磨损。膝关节屈曲对位不会影响PE磨损(p = 0.874),但会增加胫骨组件的总平移量(p = 0.041):结论:PE嵌体固定良好,PE稳定性与PE磨损之间没有关系。结论:PE嵌体固定良好,PE稳定性和PE磨损之间没有关系。PE磨损率较低,内侧和外侧间隙的磨损率相似。膝关节屈曲排列并不影响 PE 磨损。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stable polyethylene inlay fixation and low polyethylene wear rate in fixed-bearing total knee arthroplasty at five to six years' follow-up.

Aims: Micromotion of the polyethylene (PE) inlay may contribute to backside PE wear in addition to articulate wear of total knee arthroplasty (TKA). Using radiostereometric analysis (RSA) with tantalum beads in the PE inlay, we evaluated PE micromotion and its relationship to PE wear.

Methods: A total of 23 patients with a mean age of 83 years (77 to 91), were available from a RSA study on cemented TKA with Maxim tibial components (Zimmer Biomet). PE inlay migration, PE wear, tibial component migration, and the anatomical knee axis were evaluated on weightbearing stereoradiographs. PE inlay wear was measured as the deepest penetration of the femoral component into the PE inlay.

Results: At mean six years' follow-up, the PE wear rate was 0.08 mm/year (95% confidence interval 0.06 to 0.09 mm/year). PE inlay external rotation was below the precision limit and did not influence PE wear. Varus knee alignment did not influence PE wear (p = 0.874), but increased tibial component total translation (p = 0.041).

Conclusion: The PE inlay was well fixed and there was no relationship between PE stability and PE wear. The PE wear rate was low and similar in the medial and lateral compartments. Varus knee alignment did not influence PE wear.

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来源期刊
Bone & Joint Research
Bone & Joint Research CELL & TISSUE ENGINEERING-ORTHOPEDICS
CiteScore
7.40
自引率
23.90%
发文量
156
审稿时长
12 weeks
期刊介绍: The gold open access journal for the musculoskeletal sciences. Included in PubMed and available in PubMed Central.
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