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Archives of Orthopaedic and Trauma Surgery

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01-08-2008 | Orthopaedic Surgery

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

Authors: T. Mumme, R. Marx, R. Müller-Rath, C. H. Siebert, D. C. Wirtz

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 8/2008

Abstract

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-/TiAl₆V₄-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-/TiAl₆V₄-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 TiAl₆V₄-stems (P ≥ 0.05).

Conclusion

The silica/silane coating significantly decreased hydrolytic debonding at the metal-bone cement interface with consecutively less cement failure.

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Title: Surface coating to improve the metal-cement bonding in cemented femur stems
Authors: T. Mumme
R. Marx
R. Müller-Rath
C. H. Siebert
D. C. Wirtz
Publication date: 01-08-2008
Publisher: Springer-Verlag
Published in: Archives of Orthopaedic and Trauma Surgery / Issue 8/2008
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI: https://doi.org/10.1007/s00402-007-0463-z

At a glance: The STEP trials

Springer Medicine

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

Abstract

Introduction

Materials and methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Conclusion

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