An apparatus and technique for supporting and securing a human upper extremity suitable for diagnostic and surgical procedures with the apparatus comprising a base plate coupled to moveable proximal and distal platforms. The distal platform supports the hand and wrist while pivoting about a ball and socket (universal) joint. The proximal platform is attached to a moveable support that variably elevates the upper extremity between the shoulder and the wrist (ie the distal platform) whilst travelling longitudinally along the base plate. These upper platforms attach to a common lower platform (ie the base plate) and function independently yet complimentarily to variably elevate and position the entire upper extremity above the base plate thereby achieving reproducible medical (or “user”) access to any discrete site from the shoulder to the digits. The proximal and distal platforms may also function as a bridge for a third upper platform converting an apparatus with two relatively short supportive surfaces to an apparatus having one relatively long supportive surface.
