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There is joint space narrowing with bone proliferation at the third proximal interphalangeal joint and erosions are present at the fourth distal interphalangeal joint (white circle). Extracapsular enhancement (small arrows) is seen medial to the third and fourth proximal interphalangeal joints, indicating probable enthesitis (inflammation of a ...
Osteoarthritis (OA) is a type of degenerative joint disease that results from breakdown of joint cartilage and underlying bone. [5] [6] It is believed to be the fourth leading cause of disability in the world, affecting 1 in 7 adults in the United States alone. [7]
Heberden's nodes are hard or bony swellings that can develop in the distal interphalangeal joints (DIP) (the joints closest to the end of the fingers and toes). [1] They are a sign of osteoarthritis and are caused by formation of osteophytes (calcific spurs) of the articular (joint) cartilage in response to repeated trauma at the joint.
[10] Psoriatic arthritis is known to present in five distinct patterns: oligoarticular (affecting four or fewer joints); polyarticular (affecting five or more joints); prominent distal interphalangeal (DIP) joint involvement; arthritis mutilans; and psoriatic spondylitis. More than 70% of cases follow the oligoarticular pattern.
Hypertrophic osteoarthropathy is a medical condition combining clubbing and periostitis of the small hand joints, especially the distal interphalangeal joints and the metacarpophalangeal joints. Distal expansion of the long bones as well as painful, swollen joints [ 3 ] and synovial villous proliferation are often seen.
joint involvement, designating the metacarpophalangeal joints, proximal interphalangeal joints, the interphalangeal joint of the thumb, second through fifth metatarsophalangeal joint and wrist as small joints, and shoulders, elbows, hip joints, knees, and ankles as large joints: Involvement of 1 large joint gives 0 points
Osteophytes form because of the increase in a damaged joint's surface area. This is most common from the onset of arthritis. Osteophytes usually limit joint movement and typically cause pain. [6] Osteophytes form naturally on the back of the spine as a person ages and are a clinical sign of degeneration in the spine.
They may pass from the main joint cavity into a neighboring synovial cyst. For this reason, a mass may not be appreciated within the actual joint space itself. [citation needed] Additional radiographic findings include joint effusion and degenerative changes such as joint space narrowing, subchondral sclerosis, and osteophyte formation.