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Measure to the 1/10th of a centimeter the circumference of the far or distal thumb joint.
Measure to the 1/10th of a centimeter the distance on the palm from the distal thumb joint to the center of the wrist crease.
Measure from the distal thumb crease to the bottom of the web space.
On the appropriate chart (see links below), find the square where Measurement A and Measurement B meet. The square should fall within a bold area corresponding to the correct size. If Neonatal use only Measurement A an Neonatal Sizing and refer to the neonatal chart for neonatal sizing.
Example: If Measurement A = 5.2 centimeters and Measurement B = 6.0 centimeters, then splint size = P5
Note splint size and left or right hand, as this is required when ordering. If ordering offline, the catalog # for the above example would be P5-L (left hand) or P5-R (right hand).
To assure the best fit, use of a sizing kit is recommended. If a sizing kit is unavailable, follow the directions above. Neonatal sizes are suitable for very small or prematurely born infants. Pediatric sizes are suitable for children from about 3 months to 6-10 years. Older children and adults need adult sizes. When figuring sizes, it is important to use a centimeter tape measure.
When hand sizes fall outside the standard sizes provided, you may call or choose the custom options when ordering. To order a custom size we will need measurements A, B & F. Select or specify whether you need a longer strap, larger thumb piece or added reinforcement at the web space. Custom cut longer, larger supinator straps are also available.
This custom wrist-hand orthosis is sewn from the same washable, 1.5mm nylon-covered neoprene as our thumb splints and supinator straps. The strapping system and design of the Allyson splint counter ulnar deviation and provide support at the wrist and thumb. The pocket of the palm side holds a removable, molded plastic stay to support wrist extension.
1) Record measurements in millimeters.
2) Include a photocopy, scan or accurate line drawing of the palm of your hand with your order.
**Submit "A", "B", "C", "D", "E" and "F" measurements listed below.
Please see our Allyson Splint Sizing Page from more information.