Conditions + Treatments

Ulnar Club Hand in Children

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Contact the Hand and Orthopedic Upper Extremity Program

  • 1-617-355-6021
  • International: +01-617-355-5209
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A diagnosis of ulnar club hand means that your child’s wrist is in a fixed and bent position toward the side of the hand with the little finger.

  • It’s caused by an ulna (the bone that connects the elbow to the forearm) that wasn’t formed correctly in the womb.
  • Your child’s thumb may also be deformed or absent.

What is radial and what is ulnar?

When describing a particular side of the arm, you may hear your child's doctor refer to the "radial side," which indicates the side of the arm on which the thumb lies, or the "ulnar side," which describes the side on which the little finger lies.

These terms are used rather than "inner" or "outer" arm because the palm of the hand can face either forward or backward.

Hand and Orthopedic Upper Extremity Program

The Hand and Orthopedic Upper Extremity Program provides comprehensive care involving occupational and physical therapy, splinting, casting and reconstructive surgeries for infants, children and adolescents with complex congenital, neuromuscular, sports-related oncologic and traumatic upper limb conditions.

Hand and Reconstructive Microsurgery Program

The specialists in the Hand and Reconstructive Microsurgery Program at Boston Children's are experts in the management of congenital and acquired hand deformities. We recognize the social elements involved in pediatric hand surgery, so an essential part of these operations has been making the child's hand as symmetrical as possible with his unaffected hand.


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- Sandra L. Fenwick, President and CEO

Boston Children's Hospital 300 Longwood Avenue, Boston, MA 02115 617-355-6000 | 800-355-7944

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