What Are Heberden’s Nodes?
Heberden’s Nodes Are a Clinical Sign of Osteoarthritis
Visible signs of osteoarthritis (OA) are an important element when the disease is being diagnosed. Diagnosis of other types of arthritis, such as rheumatoid arthritis and gout, often relies more heavily on laboratory tests.
Heberden’s Nodes Explained
Heberden’s nodes, named after William Heberden who discovered the nodes, are a classic sign of hand osteoarthritis (the third most commonly affected joint following osteoarthritis of the knee and hip). Heberden’s nodes are bony enlargements of the joint closest to the fingertip — also known as the DIP joint or distal interphalangeal joint.
The Significance of Heberden’s Nodes
In scientific studies, there has been a dispute over whether there is a correlation between Heberden’s nodes and a specific subset of osteoarthritis, known as generalized osteoarthritis. A study inOsteoarthritis and Cartilage (2006) suggests, “In patients with Heberden’s nodes, the OA starts with the subchondral ossification (mineralization and thickening of bone just under cartilage).
Heberden’s nodes are the specific manifestation of GOA (generalized osteoarthritis) in the distal finger joints.”
There is another controversy too that surrounds Heberden’s nodes — whether Heberden’s nodes are synonymous with DIP osteophytes. One study in theAnnals of the Rheumatic Diseases (1998), suggests they are not synonymous.
Amid the controversies, most resources agree that Heberden’s nodes are most common in women who are post-menopausal. Studies suggest a genetic predisposition to developing Heberden’s nodes, whereby the associated gene is dominant in women and recessive in men.