Kinematics of the Cervical Adjacent Segments After Disc Arthroplasty Compared With Anterior Discectomy and Fusion.

The article evaluates the kinematics of the adjacent segments and global cervical spine after cervical arthroplasty compared with anterior cervical discectomy and fusion (ACDF). Results indicate no significant difference in the adjacent segment range of motion (ROM) or centers of rotation with either cervical arthroplasty or ACDF. However, the change in sagittal alignment at the cranial and caudal adjacent segments was significantly more lordotic after arthroplasty compared to ACDF.