Enlarged interphalangeal joints Heberden node 2013-08-10T12:19:59Z UMLS:C0018862 SNOMEDCT_US:371598009 Heberden's nodes are nodular deformities at the distal interphalangeal joint of the fingers (usually the middle and index) and are commonly seen in the elderly. The deformity is created by osteophyte formation and synovial thickening at the margin ofan osteoarthritic joint. Significant functional problems are rarely encountered though patients may suffer with stiffness and pain. Surgical intervention is seldom indicated unless there is severe pain or instability. In such cases, a joint fusion may be appropriate. Heberden's node HP:0012313 Bony swelling of the distal interphalangeal joint (DIP) associated with the formation of osteophytes (calcific spurs) of the articular (joint) cartilage that are visible radiographically.