Identification of calcium pyrophosphate dihydrate crystals in asymptomatic metatarsophalangeal joints

pyrophosphate dihydrate crystals

Accepted for publication 20 April 1993 Abstract Objectives-Little is known about the effect on crystal induced neutrophil responses of the opsonisation of calcium pyrophosphate dihydrate (CPPD) (triclinic) crystals with components of serum and plasma. The purpose ofthis study was to determine the effects of precoating CPPD crystals with plasma, serum, complement depleted serum, and IgG on a ful...

Factors affecting the solubility of calcium pyrophosphate dihydrate crystals.

The solubility of triclinic calcium pyrophosphate dihydrate (CPPD) crystals was measured under varying conditions using 45Ca-labeled crystals, expressing solubility as micromoles per liter of 45Ca in solution. In a 0.1-M Tris-HC1 buffer pH 7.4, the solubility of accurately sized CPPD crystals (37-20mum) was 60muM with maximal solubility being attained after about 8 h incubation at 37degreeC. Re...

Pathogenesis of chondrocalcinosis and pseudogout. Metabolism of inorganic pyrophosphate and production of calcium pyrophosphate dihydrate crystals.

Calcium pyrophosphate dihydrate (CPPD) is one of several types of crystal that may be deposited in the body. The term chondrocalcinosis is used to describe the radiographic appearance of calcified deposits, notably in the articular cartilage and menisci of the knees but also in other joints.' Not all calcified deposits within joints are due to calcium pyrophosphate; however, occasional depositi...

Pseudotumoral presentation of calcium pyrophosphate dihydrate crystal

Calcium pyrophosphate dihydrate crystal deposition of multiple lumbar facet joints: a case report.

Pseudogout of the lumbar facet joints is rare. We report on a 69-year-old woman with 2-level symptomatic synovial cysts of the facet joints caused by calcium pyrophosphate dihydrate crystal deposition. She underwent surgical decompression for sciatica and low back pain. At one-year follow-up, she had recovered completely.