musculoskeletal and connective tissue disorders
Osteoarthritis of the Hand
Introduction
Hand involvement is extremely common in Osteoarthritis (OA) . (See also Overview and Evaluation of Hand Disorders .) Osteoarthritis affecting the hand may include asymptomatic enlargement of nodules at the proximal interphalangeal joint (Bouchard nodes) or distal interphalangeal joint (Heberden nodes) or angulation at these joints. Pain and stiffness of these joints and the base of the thumb are also common. The wrist usually is spared (unless there was preexisting trauma), and there is usually minimal or no metacarpophalangeal joint involvement unless the patient also has a metabolic disorder (eg, Hereditary Hemochromatosis ). Differentiation of hand changes in osteoarthritis from those in rheumatoid arthritis is discussed in Evaluation of the Patient With Joint Symptoms . This photo shows Heberden nodes, hard-tissue (bony) prominences of distal interphalangeal joints seen in patients with osteoarthritis. DR P. MARAZZI/SCIENCE PHOTO LIBRARY Heberden nodes are hard-tissue (bony) prominences of distal interphalangeal joints, seen best in this image on the 2nd and 3rd digits of both hands. By permission of the publisher. From Myers S:Atlas of Rheumatology. Edited by G Hunder. Philadelphia, Current Medicine, 2005. Bouchard nodes are hard-tissue (bony) prominences of proximal interphalangeal joints, which in this photo are seen best on the digits of the right hand and the 1st and 2nd digits of the left hand. © Springer Science+Business Media 