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Comparison of lumbar fusion and artificial disc replacement: a finite element analysis
Jingang Zhao1, Ke Wei2, Junling Chen2
1College of Artificial Intelligence, North China University of Science and Technology, Tangshan, China.
Abstract:
This study quantitatively evaluates biomechanical effects on L2-L5 of lumbar fusion versus two artificial disc prostheses. Finite element models of normal/operated spines were built; Physiological motions were simulated, with range of motion (RoM) and adjacent discs' peak von Mises stress recorded. Out results showed that fusion increased adjacent stress; mechanical prosthesis enhanced specific RoM, viscoelastic one preserved near-normal RoM/stress. Disc replacement has better biomechanics; viscoelastic prosthesis aids physiological preservation, informing prosthesis design and clinical practice for lumbar degenerative disease.
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