Swan neck deformity (fingers)

Last revised by Ashesh Ishwarlal Ranchod on 18 Feb 2024

Swan neck deformity is a musculoskeletal manifestation of rheumatoid arthritis presenting in a digit of the hand, due to the combination of:

  • hyperextension of a proximal interphalangeal (PIP) joint
  • flexion of a distal interphalangeal (DIP) joint

Pathology

The swan neck deformity, characterized by hyperextension of the PIP and flexion of the DIP joints, is due to an imbalance of muscle forces 6.

Etiology

Swan neck deformity may present in 3,4:

See also

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.