A fixation system configured to releasably secure an orthopedic implant to a bone. The fixation system including at least one expandable member that is inserted through the lumen and positioned in cancellous bone near the distal portion of the orthopedic implant. A delivery tube delivers a flowable biomaterial to the expandable member. The expand fixation structure includes at least one dimension greater than a corresponding dimension on the orthopedic implant to secure the orthopedic implant in the bone. An insert is secured in the lumen to releasably attach the fixation system to the orthopedic implant. The expandable member is detachable from the orthopedic implant to facilitate subsequent removal of the orthopedic implant from the bone.
