EXPANDABLE INTERVERTEBRAL SPACERS

摘要

Laterally expanding vertebral spacer devices are provided for repairing damaged vertebral discs. The vertebral spacer devices maintain the height of a distracted vertebral disc space while providing stability to the spine. In one form of the invention, a vertebral spacer device (50) is provided with a first arm (52) movably coupled to a second ann (54). The first and second arms (52, 54) are laterally expandable from a first width for insertion into the disc space to a second width after insertion into the disc space. The first and second arms also define a cavity (66) therebetween for placement of bone growth material.