"symmetrical involvement of the proximal interphalangeal joints, metacarpophalangeal joints, and carpal bones."
"osteopenia and then osteoporosis, uniform joint space loss, subchondral cyst formation, subluxations, marginal erosions."
"hydroxyapatite crystal deposition disease (HADD)"
"Milwaukee shoulder"
"classic central erosions (gull-wing appearance); possible ankylosis"
"usually proximal, bilateral and symmetric involvement: metacarpophalangeal joints, proximal interphalangeal joints, and carpal bones; involves the hands before the feet"
"periarticular osteopenia and later osteoporosis (both unlike psoriatic arthritis), uniform joint space narrowing, subchondral cyst formation, and subluxations; no new bone formation unlike psoriatic arthritis and reactive arthritis"
"erosions; classic: "pencil in cup"; osteoporosis is not a feature in psoriatic arthritis"
"usually proximal, bilateral and symmetric involvement: metacarpophalangeal joints, proximal interphalangeal joints, and carpal bones; involves the hands before the feet"
"pressure erosion (e.g. tenosynovial giant cell tumours, synovial osteochondromatosis)"