To estimate size: use body height or ulna/forearm length, and wrist width
Measuring the length of the ulna from the olecranon to the ulnar styloid.
Wrist width measure at the level of the wrist crease.
The One-80˚ Pronosupinator can be used on the right or left arm, for supination and pronation. If your patient can fit into both the standard and large sizes, we recommend choosing the standard size as it will be the most comfortable for regular wear.