PHOENIX WRIST UNIT

THE PHOENIX WRIST UNIT IS A LOW PROFILE DYNAMIC WRIST EXTENSION ASSIST WHICH IS USED WITH A CUSTOM FIT THERMOPLASTIC SPLINT

 
The PHOENIX WRIST UNIT package includes: wrist unit; 3 binding head screws with thumb nuts; 10 adjustable nylon fasteners; and a hex wrench. Additional splint supplies, needed but not included, are: low temperature thermoplastic (1/16" thick); strap material; and rubber bands or springs with variable tensions.  

Set screws at the lateral bars, allow 1/2 inch proximal-distal adjustment.

 

The distal bar is reversible to allow fitting to right or left hands. Lateral adjustment at the "T" is provided to accommodate extreme radial or ulnar deviation.  

     

 

Step #1: A forearm gauntlet pattern is drawn. It extends approximately 2/3 the length of the forearm, but measures no less than 5". It rests proximal to the radial and ulnar styloids. Circumference measurement allows approximately 1" overlap.   Step #2: The pattern is cut from 1/16" thermoplastic, heated, then wrapped around the forearm. The thermoplastic is placed, not pressed, to lightly adhere to itself. Proximal and distal edges are slightly flared. Approximately 45 degree forearm pronation is suggested as the position for fitting the guantlet. Straps are attached.
     

 

Step #3: A rectangular pattern is cut for the palmar splint. The width equals the circumference of the palm at the palmar crease. The length equals the distance from the flexion crease to the hook of the hamate.   Step #4: The pattern is cut from 1/16" thermoplastic, heated, then wrapped around the palm. The thermoplastic lightly adheres at the dorsum of the hand and holds the cuff in position as the edges are carefully rolled to fit the thenar and MP flexion creases.
     

 

Step #5: The cuff is marked for trimming and for location holes to be punched for nylon fasteners.   Step #6: After the gauntlet and palmar cuff are formed, the PHOENIX WRIST UNIT is positioned volarly to align the hinge with the axis of motion. The guantlet is marked to locate holes to be punched for attaching the outrigger.
     

 

Step #7: A hole is punched at the dorsal-proximal edge of the splint. A thumb nut is then attached to anchor the rubber bands. Two holes are punched on the volar side of the gauntlet and the outrigger is attached by thumb nuts.   Step #8: Holes are punched in the cuff and nylon fasteners are threaded through.
     

 

Step #9: The fasteners are looped and adjusted to the desired length. The outrigger length is adjusted.   Step #10: The two movable collars are positioned to guide the nylon loops. The excess line is cut off.

Step #11: A rubber band(s) of the desired tension is then
attached to the distal wire and the thumb nut anchor.