Also known as: flexion deformity, bent finger deformity.

What is camptodactyly?

Camptodactyly refers to a flexion deformity of the proximal interphalangeal joint of the fingers. It may occur in just one finger, usually the pinky finer, or multiple fingers. It may be present in both hands or just one hand.

What causes camptodactyly? 

The cause of camptodactyly is often unknown. Some anatomic differences have been seen in the affected fingers of children with camptodactyly. These include:

  • abnormal lumbrical insertion
  • abnormal flexor digitorum superficialis insertion
  • abnormal extensor tendon anatomy
  • skin contracture
  • joint contracture.
The condition may have a genetic component, but usually arises spontaneously.

What are the symptoms of camptodactyly? 

The bent finger is the primary symptom of camptodactyly. It may worsen over time. Swelling, pain or other symptoms are unusual.

What are camptodactyly care options? 

The most important treatment for camptodactyly is splinting and stretching, administered by a therapist skilled in the care of pediatric hand problems. Splinting or stretches can be used to resolve mild camptodactyly. Surgical intervention is reserved for severe cases.

Reviewed by: Aaron J Berger, MD

This page was last updated on: June 21, 2022 02:41 PM

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