Effect of Graded Facetectomy on Biomechanics of Dynesys Dynamic Stabilization System
Spine,

Kiapour A et al. – Partial facetectomy had a minimal effect on range of motion on the Dynesys–implanted segment. However, in the case of total facetectomy the motion increased by almost 40% in flexion and by 200% in axial rotation. The higher stresses applied to the screws in Dynesys in specific loadings may lead to higher risk of screw failure in Dynesys than in a generic rigid fixation construct.

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