Cutibacterium (Propionibacterium) acnes Infection of the Native Wrist Joint.

Cutibacterium (Propionibacterium) acnes (C. acnes, previously known as P. acnes) is an anaerobic organism that commonly colonizes the human skin. After Staphylococcus spp. and Streptococcus spp., it is a common organism associated with deep prosthetic shoulder joint infections. We describe the case of rapidly progressive arthropathy of the native wrist secondary to infection with C. acnes. Diagnosis was made on prolonged enrichment cultures. The patient went on to complete a long-term course of oral sulfamethoxazole-trimethoprim with clinical improvement. To the best of our knowledge, this is the first report in the literature that C. acnes has been the main causative organism implicated in infection of the native wrist joint. It is imperative to request and wait for results of prolonged enrichment cultures to aid microbiological diagnosis in such cases.