This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Windblown hand is a hand deformity that is present from birth. The cause of this deformity is unknown. People with windblown hand have flexion contractures of the joints at the base of each finger that prevents normal mobility of their hand and causes their fingers to bend toward their “little” finger (i.e., ulnar drift). In addition, windblown hand is characterized by a “thumb-in-palm deformity” or “clasped thumb” where the thumb is webbed to the palm by a soft tissue bridge.
Click here to view the anatomy of the hand provided by the American Society for Surgery of the Hand.
For more information, visit GARD.