An adaptor/holder (40) is described which attaches to the front (18) of an existing orthopedic inserter/impactor handle (10) via the handle's existing threaded interface mechanism (22). The adaptor/holder (40) has an annular housing (42) that snaps onto the front (18) of the existing inserter (10), and has an internal yoke and pin assembly (70) that attached to the handle's interface mechanism (22). The holder (40) adapts the inserter (10) to much more easily and quickly release from a prosthetic component (12) after the component (12) is surgically implanted in a patient, and with less mechanical manipulation than could otherwise be accomplished using the inserter (10) alone. The adaptor/holder utilizes the inserter's existing mount tensioning (draw piston) mechanism (30) to quickly engage and disengage the prosthetic component (12). Upon activation of the inserter's tensioning mechanism (30), the holder (10) receives and fixes a prosthetic component (12) to the end (18) of the inserter (10). Deactivation of the inserter handle's tensioning mechanism (30) quickly accomplishes release of the prosthetic component (12) with minimal manipulation.