Biomechanical evaluation of the Total Facet Arthroplasty System ® (TFAS ® ): loading as compared to a rigid posterior instrumentation system
2012
Purpose
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.
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