Cemented total knee arthroplasties -: Improvements in the binding between bone cement and metal

被引:2
作者
Mumme, T.
Marx, R.
Andereya, S.
Weber, M.
Mueller-Rath, R.
Wirtz, D. C.
机构
[1] Univ Klinikum Aachen, Orthopad Klin, D-52074 Aachen, Germany
[2] Univ Klinikum RWTH Aachen, Klin Zahnarztliche Prothet Lehr & Forschungsgebie, Aachen, Germany
来源
ZEITSCHRIFT FUR ORTHOPADIE UND IHRE GRENZGEBIETE | 2006年 / 144卷 / 03期
关键词
cemented total knee arthroplasty; debonding; aseptic loosening; interface;
D O I
10.1055/s-2006-933485
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Introduction: The aseptic loosening of cemented total knee arthroplasties is still an unsolved problem. In this regard, the hydrolysis resistance in the metal-to-bone cement interface is of major importance. Material and Methods: Cemented pre-treated tibia components coated by means of a silica/silane interlayer system of the model "Columbus PS" were dynamically loaded with the help of a knee-simulator similar to DIN ISO 14243. After loading, the components were microscopically analysed concerning debonding in the metal-to-bone cement interface as well as with regard to cement mantle defects. These data were matched with uncoated "Columbus PS" components. Unloaded coated and uncoated tibia components acted as a control. Results: In comparison with uncoated tibia components, the pretreated and coated ones yielded a highly significant reduction of cement defects (p < 0.01) as well as a significant reduction of debonding in the metal-to-bone cement interface (p < 0.05). Conclusion: By means of the silica/silane interlayer system for cemented tibia components, a hydrolytic debonding in the metalto-bone cement interface with subsequent mechanical loosening and consecutive early cement mantle failure can be significantly reduced. This could lead to an increased long-term stability of the metal-to-bone cement compound with decreased aseptic loosening in clinical use.
引用
收藏
页码:281 / 288
页数:8
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