Biomechanical evaluation of the Total Facet Arthroplasty System® (TFAS®): loading as compared to a rigid posterior instrumentation system

European Spine Journal

David M. Rosler¹  Marta L. Villarraga¹  Jorge A. Ochoa¹  Simon G. Sjovold¹  Chad R. Larson¹  Peter A. Cripton¹  Peter M. de Bakker¹  Anton Bowden¹  Qingan Zhu¹ 

[1] Department of Orthopaedics, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC Canada

关键词: Total facet arthroplasty;    Implant loading;    Bone-implant interface;    Load sharing;    Lumbar spine;   

DOI  :  10.1007/s00586-012-2253-8

学科分类：骨科学

来源: Springer

【 摘 要 】

To gain insight into a new technology, a novel facet arthroplasty device (TFAS) was compared to a rigid posterior fixation system (UCR). The axial and bending loads through the implants and at the bone-implant interfaces were evaluated using an ex vivo biomechanical study and matched finite element analysis. Kinematic behaviour has been reported for TFAS, but implant loads have not. Implant loads are important indicators of an implant’s performance and safety. The rigid posterior fixation system is used for comparison due to the extensive information available about these systems.

【 授权许可】

Unknown