Heberden's nodes are typically found at which joint?

Heberden's nodes are bony swellings that develop on the distal interphalangeal joints (DIP) of the fingers. These nodes are a classic sign of osteoarthritis, which often affects the joints as part of the aging process or due to wear and tear over time. The presence of Heberden's nodes indicates that the osteoarthritis has led to the formation of osteophytes—bony growths—in this specific joint.

The distal interphalangeal joints are located at the farthest joint of the fingers, allowing for easy observation of any changes that might indicate osteoarthritis. In contrast, the other joints mentioned, such as the metacarpophalangeal joint or proximal interphalangeal joint, are not typically associated with Heberden's nodes; those joints might display other types of nodules or changes, particularly in different forms of arthritis, but are not the sites where Heberden's nodes form. Understanding the characteristic location of Heberden's nodes is important in diagnosing osteoarthritis and assessing the extent of joint involvement in affected individuals.