WHFO stands for Wrist-Hand-Finger Orthosis. A WHFO splint is similar to other hand wrist orthoses; however, the hand and wrist support in a WHFO device extends to the fingers and thumb of the hand.
A wrist, hand, and finger orthosis is designed to minimize the risk of loss of motion in the wrist and finger joints. The preformed functional hand splint by North Coast Medical is an example of this type of wrist brace.