Definition
The deposition of calcium in joints
- often in degenerative cartilage
- many different causes
Crystals can be salts of
- Calcium pyrophosphate dihydrate (CPPD)
- Dicalcium phosphate hydrate
- Calcium hydroxyapatite
- Calcium oxalate
Differential Diagnosis
WHIP A DOG
Wilson's
Haemochromatosis, hyperparathyroidism
Hypophosphatasia
Idiopathic
Pseudogout, pernicious anaemia
Amyloid, acromegaly
Diabetes
Ochronosis
Gout
Xray
Calcium in articular cartilage
- fine linear densities
- parallel to subchondral bone
Arthroscopy
