Devices and methods for performing a procedure within a spine are disclosed herein. In one embodiment, a method includes inserting an expandable member into an interior of a bone-related structure. The expandable member defines a first and second lumen. A medium is delivered through the first lumen and into the interior of the expandable member while within the interior of the bone-related structure. A filler material is delivered through the second lumen and into a cavity within the interior of the bone-related structure while the expandable member is disposed therein. An apparatus can include an expandable member that defines a first lumen in fluid communication with an interior volume of the expandable member, and a second lumen in fluid communication with an opening of the expandable member. The second lumen is configured to communicate a filler material through the opening and into an interior cavity of a bone-related structure.