IMPLANTS AND METHODS FOR POSTERIOR DYNAMIC STABILIZATION OF A SPINAL MOTION SEGMENT

摘要

An implant assembly (30) for stabilizing a spinal motion segment includes a spacer member (32) positionable between adjacent spinous processes and upper and lower engaging members (50, 70) extending from the spacer member (32) . The upper and lower engaging members engage at least one lamina (16, 18) to resist flexion of the spinal motion segment.