SYSTEM AND METHOD FOR FACET JOINT REPLACEMENT

摘要

A facet joint replacement system may include an inferior implant with an inferior articular surface, superior implant with a superior articular surface, and a crosslink extending across a vertebral sagittal plane. The inferior implant may comprise an inferior strut, and a polyaxially adjustable, lockable mechanism which couples the inferior articular surface with a first end of the inferior strut. A second end of the inferior strut may be secured to a polyaxially adjustable, lockable fixation assembly securable in a vertebra. The superior implant may be secured to a polyaxially adjustable, lockable fixation assembly. Either fixation assembly may comprise a base member with anti-rotation features. The inferior and/or superior implants may be held together by a detachable, deformable coupler during the implantation process. The inferior articular surface and the inferior strut may be independently adjustable along a medial-lateral axis and/or a cephalad-caudal axis of a vertebra.