Bouchard's nodes are seen in the proximal interphalangeal joints. They are a sign of osteoarthritis, they are less common than Heberden's nodes. They are bony outgrowths on the proximal interphalangeal joints. Osteoarthritis (OA), also known as arthrosis or degenerative joint disease, is a disease featuring pain and impaired function of the joints. ... Heberdens nodes are seen in the distal interphalangeal joints. ...