Acute calcific periarthritis

What is acute calcific periarthritis?

When BCP crystals are shed from a calcific deposit in tendons or other periarticular soft tissues, there is an intense local inflammatory reaction to the crystals similar to other crystalline arthritides. If this reaction occurs around a joint, the clinical picture is an acute arthritis with pain, warmth, loss of motion, and swelling. Constitutional symptoms such as fatigue and low grade fever can occur. There may be elevated acute-phase reactants and peripheral white blood cell count. Plain radiographs may reveal the BCP deposit and thus identify the crystal causing the problem; of note, bone destruction is not seen (unlike the destructive BCP arthropathy, Milwaukee shoulder syndrome). Acute calcific periarthritis most commonly occurs in the shoulder and hip. Attacks of calcific periarthritis can occur in other joint areas either spontaneously or after minor trauma.

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