Surface coating to improve the metal-cement bonding in cemented femur stems

被引：9

作者：

Mumme, T. ^{[1
]}

Marx, R. ^{[1
,2
]}

Mueller-Rath, R.

Siebert, C. H. ^{[3
]}

Wirtz, D. C. ^{[1
]}

机构：

[1] Univ Hosp Aachen, Dept Orthopaed Surg, D-52074 Aachen, Germany

[2] Univ Hosp Aachen, Dept Prosthet Dent, Sect Dent Mat, Aachen, Germany

[3] Hannover Med Sch, Dept Orthopaed Surg, D-30625 Hannover, Germany

来源：

ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY | 2008年 / 128卷 / 08期

关键词：

cemented hip arthroplasty; aseptic loosening; metal-cement interface; surface coating; debonding;

D O I：

10.1007/s00402-007-0463-z

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 Hydrolytic debonding of the metal-cement interface is one of the main reasons for aseptic loosening in cemented hip arthroplasty. Materials and methods BiContact femur stems (CoCrMo-/TiAl(6)V(4)-alloy) were coated by a silica/silane interlayer coating system. The stems were cemented into artificial femurs. The cyclical loading (DIN ISO 7206-4) was performed within a hip-simulator. Uncoated stems (CoCrMo-/TiAl(6)V(4)-alloy) were prepared and loaded the same way. After loading, the metal-cement and the bone-cement interfaces were analysed. Unloaded uncoated and unloaded coated BiContact stems served as a control. Results The coated loaded stems showed a significant reduction in debonding and cement failure (P <= 0.05). A high correlation was documented between debonding and cement failure (r(Spear >=)0.9). There was no significant difference between CoCrMo- and TiAl(6)V(4)-stems (P >= 0.05). Conclusion The silica/silane coating significantly decreased hydrolytic debonding at the metal-bone cement interface with consecutively less cement failure.

引用

页码：773 / 781

页数：9

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