EXPANADABLE INTERVERTEBRAL SPACERS AND METHODS OF USE

摘要

An intervertebral spacer (10) is inserted between vertebral members in a compact configuration and expanded post-insertion to contact the adjacent vertebral members. The intervertebral spacer comprises a first member (12) and a second member (60) movable with respect to the first member between retracted and extended positions. The two members form an expansion chamber which can be filled with a fluid as gas to expand the intervertebral spacer.