Articulating instrumentation for dynamic spinal stabilization

摘要

Dynamic stabilization apparatus and methods in the context of a spinal implant configured to constraine intervertebral movement, where the constraint is meant to eliminate unwanted, non-physiologic motions. The system provides dynamic stability to motion in a compromised spinal joint by allowing motion along a centrode of the instant axis of rotation (IAR) that substantially approximates the normal centrode for the respective spinal joint.