Abstract: An intramedullary device assembly is provided for repairing defects of a bone. The intramedullary device assembly includes a device that is configured to be inserted into the medullary canal of the bone. The assembly also includes a guide adapter that attaches to the end of the device and includes a movable and adjustable bone engagement member. Also a compression member may be attached to the guide adapter that pushes the bone engagement member into engagement with the bone. The bone engagement member defines at least two bone engagement points and wherein at least one bone engagement point is movable relative to at least one other bone engagement point in the direction of the bone.