A Computer Simulation Study of Fusion Surgery and Artificial Disc Replacement on the Human Cervical Spine
The biomechanical changes brought on by spine fusion and the artificial disc designs to restore physiologic motion were studied by using a cervical spine computer model. Fusion increased the motion compensation at the adjacent segment during flexion and extension. The global rotational stiffness and segmental disc forces were also increased after fusion. Among the three prosthetic disc designs, the PDD-III (5-DOF spherical joint in plane parallel with the C5-C6 disc level) maintained the normal motion and minimized load build up of adjacent segment.
Soon-Bok Lee and Yun-Jae Kim
H. S. Ahn et al., "A Computer Simulation Study of Fusion Surgery and Artificial Disc Replacement on the Human Cervical Spine", Key Engineering Materials, Vols. 326-328, pp. 903-906, 2006