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Calcium pyrophosphate dihydrate (CPPD) crystal deposition disease, also known as pseudogout and pyrophosphate arthropathy, is a rheumatologic disease which is thought to be secondary to abnormal accumulation of calcium pyrophosphate dihydrate crystals within joint soft tissues. [1] The knee joint is most commonly affected. [2]
For example, gout in ankles or gout in knee joints may also occur. Gout in hands is less common but can happen. In this situation, it usually affects small joints in the fingers.
Crystal arthropathy is a class of joint disorder (called arthropathy) that is characterized by accumulation of tiny crystals in one or more joints. Polarizing microscopy and application of other crystallographic techniques have improved identification of different microcrystals including monosodium urate , calcium pyrophosphate dihydrate ...
Milwaukee shoulder syndrome (MSS) (apatite-associated destructive arthritis/Basic calcium phosphate (BCP) crystal arthritis/rapid destructive arthritis of the shoulder) [1] is a rare [2] rheumatological condition similar to pseudogout, associated with periarticular or intra-articular deposition of hydroxyapatite or basic calcium phosphate (BCP) crystals.
Pseudogout (also referred to as calcium pyrophosphate dihydrate crystal deposition disease) is another type of crystalline arthritis that presents very similarly to gout but is caused by the deposition of rhomboid-shaped calcium pyrophosphate dihydrate (CPPD) crystals. The knees, wrists, and fingers are the most common joints affected by ...
For example, mechanical obstruction by mineral stones causes nephrolithiasis, urolithiasis, cholecystolithiasis, choledocholithiasis, docholithiasis, and sialolithiasis, and acute inflammation caused by crystals in joints causes gout and pseudogout. [1] Renal diseases are also common in crystallopathies, including: [1]
Deposition of dihydrate crystals in cartilage are responsible for the severe joint pain in cases of calcium pyrophosphate deposition disease (pseudo gout) whose symptoms are similar to those of gout. [1] Ca 2 P 2 O 7 is commonly used as a mild abrasive agent in toothpastes because of its insolubility and nonreactivity toward fluoride. [2]
Crystal Analysis: Using a microscope and polarizing light filter, birefringence of crystals can be detected in a sample of synovial fluid. This is essential to distinguish monosodium urate crystals in gout from calcium pyrophosphate dihydrate crystals in pseudogout .