Methods and apparatus for treating bones, including, in one or more embodiments, methods and apparatus for treatment of vertebral fractures that include a containment assembly for cement containment and/or a balloon assembly for maintaining vertebral height. Methods for treating a bone comprising: creating a cavity in the bone； inserting a containment jacket into the cavity； inserting a balloon into the containment jacket； inflating the balloon； and introducing a filler material into the containment jacket with isolation of the balloon from the filler material.
