title: Infectious arthritis caused by Propionibacterium acnes: a report of two cases.
abstract: Propionibacterium acnes, a micro-organism with low pathogenicity, rarely causes arthritis in a joint without a prosthesis. This report deals with two cases of P acnes infectious arthritis probably caused by direct penetration of the micro-organism into the joint space during arthrocentesis, despite the use of strict disinfection procedures. P acnes isolated from synovial fluid cannot be dismissed as a bothersome contaminant without due consideration of the clinical status of the individual patient.
authors.affiliation: Department of Rheumatology, University Hospital, Leiden, The Netherlands.
authors.forename: M F
authors.initials: MF
authors.lastname: Kooijmans-Coutinho
authors.forename: H M
authors.initials: HM
authors.lastname: Markusse
authors.forename: B A
authors.initials: BA
authors.lastname: Dijkmans
mesh_terms: D000328:Adult; D001170:Arthritis, Infectious / Q000382:microbiology*; D001424:Bacterial Infections / Q000382:microbiology*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000382:microbiology; D008875:Middle Aged; D011425:Propionibacterium acnes