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. 1979 Apr;22(4):389-95.
doi: 10.1002/art.1780220412.

Identification of hydroxyapatite crystals in synovial fluid

Identification of hydroxyapatite crystals in synovial fluid

P B Halverson et al. Arthritis Rheum. 1979 Apr.

Abstract

A semiquantitative technique employing (14C) ethane-1-hydroxy 1, -1-diphosphonate (EHDP) binding has been used to detect crystals, presumably hydroxyapatite, in human synovial fluid samples which were handled to prevent the formation of artifactual mineral phase. Binding material was found in 29% of non-inflammatory and in none of inflammatory joint fluids. Nuclide binding material was strongly correlated with the presence of CPPD crystals and with radiographic evidence of cartilaginous degeneration.

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