The biomechanics and wear characteristics of an experimental artificial disc prosthesis have been investigated through a three-part study. This study reports the results of in-vitro cadaveric testing, finite element modeling, and cyclic wear testing. Load-displacement data from the in-vitro testing and finite element model demonstrate that the artificial disc can provide comparable biomechanics to the intact case. The finite element model also predicts increased facet loads in extension. Results from the wear study show little gravimetric wear over two million cycles.

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