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Plastic and Reconstructive Surgery

Ulnar ray

What is an Ulnar Ray Anomaly?

An ulnar ray anomaly is the underdevelopment or absence of the ulna bone in the forearm. Children with this condition usually have missing fingers and underdevelopment of their arm and/or shoulder.

How common is this?

One in 100,000 children are born with ulnar ray anomalies. It occurs more commonly in males than females (3:2). One quarter of children with ulnar ray anomalies have both arms affected.

Why does this occur?

This condition is not usually related to any other medical problems. It is thought that this condition is not genetically inherited.

What are the Treatment Options?

Surgical treatment of hand and forearm anomalies may be an option to improve function. Procedures including stabilization and alignment of the wrist joint, rotational osteotomies, release of syndactyly, web space deepening and thumb reconstruction may be an option for your child. Adaptations and techniques to enhance the child’s independence in daily activities are also helpful. The occupational therapist and plastic surgeon will discuss with you the appropriate options for your child.