Swan neck deformity (fingers)

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

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


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

Swan neck deformity can present in :

See also