Bilateral shoulder arthroplasty in a patient with pseudogout: a case report.

Pseudogout or calcium pyrophosphate dihydrate deposition disease (CPPD) can be a significant cause of morbidity among many patients. The pathophysiology involves the accumulation of calcium pyrophosphate dihydrate crystals and can be confused with degenerative osteoarthritis. Treatment is usually with NSAIDs. There has been little documentation relating CPPD to joint replacement surgery. We present a case report of a patient who underwent staged, bilateral total shoulder arthroplasty and was found to have pseudogout.