Biomechanical Comparison of Anterior, Posterior, and Circumferential Fixation After One-Level Anterior Cervical Corpectomy in the Human Cadaveric Spine

Abstract

After C5 corpectomy, with intact PLs and facet capsules, anterior instrumentation is sufficient for spinal stabilization as the resultant construct is more rigid than the intact state. In the presence of C5 corpectomy with PL and bilateral facet capsule disruption, anterior plus posterior instrumentation is more rigid than anterior instrumentation alone in the axial and coronal planes and more rigid than posterior instrumentation without anterior cage in the sagittal plane.