title: An unusual case of knee pain: pseudogout and Abiotrophia defectiva infection.
abstract: 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 the first in association with pseudogout. This report supports the routine culture of synovial fluid and is further evidence for the role of A. defectiva in septic arthritis.
authors: Department of Medicine, University of Washington, Seattle, WA 98105, USA. koconnor@u.washington.edu
authors: Kim M
authors: KM
authors: O'Connor
authors: Pamela
authors: P
authors: Williams
authors: Steven A
authors: SA
authors: Pergam
mesh_terms: D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001170:Arthritis, Infectious / Q000188:drug therapy / Q000382:microbiology*; D002131:Calcium Pyrophosphate / Q000032:analysis; D002443:Ceftriaxone / Q000627:therapeutic use; D002805:Chondrocalcinosis / Q000188:drug therapy / Q000382:microbiology*; D004359:Drug Therapy, Combination; D006801:Humans; D007719:Knee Joint; D008297:Male; D015242:Ofloxacin / Q000627:therapeutic use; D013290:Streptococcal Infections / Q000188:drug therapy / Q000382:microbiology*; D013291:Streptococcus / Q000145:classification / Q000302:isolation & purification*
chemical_list: D000900:Anti-Bacterial Agents; D002443:Ceftriaxone; D015242:Ofloxacin; D002131:Calcium Pyrophosphate