Abstract: An improved intramedullary nailing device including a plurality of pivotal blades which rotate outward to engage the distal end of a fractured bone. Specifically, the blades are pivotally coupled to a connector member which translates longitudinally in either direction within an elongated sheath, translation of the connector member toward the front end of the sheath resulting in the outward rotation of the blades into the bone at its distal end. The bone engaging mechanism prevents rotation, angulation, and antero posterior translation with the device inserted lengthwise into the bone.