无金属聚乙基膝关节假肢的结合强度与带有骨的金属膝关节假肢相比:一项初步的体外研究
Dengxian Wu1,2,3, Qianjin Wang1,2,3, Hung-Kang Tsai1,2,3
1Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, PR China.
Journal of orthopaedic surgery (Hong Kong)
|November 24, 2023
概括
新的无金属聚乙基 (PEEK) 膝关节假肢显示出可靠的水泥结合强度,与传统的金属植入物相比. 虽然在广泛使用后,PEEK的剪切强度略低,但其整体性能表明在全膝关节整形术中未来有前途.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科手术 整形外科手术
- 机械工程 机械工程
背景情况:
- 全膝关节整形术 (TKA) 通常使用金属假肢,但这些假肢存在局限性.
- 为了克服这些挑战,正在探索无金属替代品.
研究的目的:
- 引入新型聚乙基 (PEEK) 膝关节假肢,作为一种无金属替代品.
- 为了比较PEEK假肢的水泥结合强度与传统的金属假肢.
主要方法:
- 十二个膝关节假肢 (PEEK和金属) 被分为无负荷和动态步行模拟 (1000万循环) 组.
- 假肢被附着在复合骨头上,使用骨.
- 进行了股骨拉开强度和骨剪切强度测试.
主要成果:
- 在1000万次循环后,无论是PEEK还是金属组,都没有观察到骨质水泥的裂.
- 在PEEK和金属组 (无负荷和10M周期) 之间,股骨拉伸强度没有显著差异.
- 在10M周期的PEEK中,与金属相比,部剪切强度明显较低 (p < .05).
结论:
- PEEK膝关节假肢证明了可靠的整合与骨质水泥,反映了金属假肢故障模式.
- 无金属PEEK假肢显示出未来在全膝关节整形术中使用的潜力.
- 对于接受TKA的患者来说,PEEK假肢是一种有前途的替代方案.
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