Case Report

An Unusual Case of Knee Pain: Pseudogout and Abiotrophia defectiva Infection

A 90-year-old man was diagnosed with monoarticular arthritis due to pseudogout and Abiotrophia defectiva infection. A. defectiva is recognized as a cause of endocarditis, but is rarely described in septic arthritis. To our knowledge, this is one of the few case reports of septic arthritis due to this organism, and…