An implant (10) for filling and/or distracting a body region, particularly a non-soft tissue cavity, has a plurality of segments (3710) within a first flexible tube (3719). The first flexible tube can be contained within a second flexible tube (3729). The implant can comprise fluent settable material such as cement within the first flexible tube or between the two flexible tubes. The segments can be flexibly connected by a filament (3721) or the like. The segments have a crush-strength sufficient to create and/or maintain the distraction of two or more non-soft tissue body surfaces, and to maintain the stability of the body region. The implant may be inserted into a cavity by an applicator having a cannula with a distal opening, and a rotary driver for applying force to move the implant within the cannula.
