PubMed · 14639249
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2003. Disease dictionary. Pseudogout.. https://pubmed.ncbi.nlm.nih.gov/14639249/
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Calcium Pyrophosphate Dihydrate Deposition (CPDD) disease has characteristic radiographic features including soft tissue calcification, joint space narrowing, bone sclerosis, subchondral cyst formation without osteophyte formation, and large intraosseous geodes. Triangular fibrocartilage calcification is frequently found and isolated scapho-trapezio-trapezoid (STT) arthritis is specific for CPDD. Distal radio-ulnar (DRUJ), isolated midcarpal joint and piso-triquetral joint involvement also occur. 127 patients were reviewed. Seventy-eight had symptomatic STT joint arthritis, for which 36 underwent surgery. Twenty-two patients had a SLAC wrist deformity for which ten underwent surgery. Eight patients had isolated midcarpal arthritis for which three midcarpal arthrodeses, two four-bone arthrodeses and two carpal tunnel releases were performed. Nineteen patients had a generalized arthritis and seven of the patients underwent surgery: four-corner arthrodesis+scaphoidectomy (one case), carpal tunnel release (two cases) extensor synovectomy (two cases) and trigger finger release (two cases).
Calcium pyrophosphate dihydrate crystal deposition disease and calcium hydroxyapatite deposition disease are common crystal diseases that have characteristic imaging appearances. This article gives a background on each disorder and discusses the qualities that distinguish them from each other and from other arthropathies.
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