Discussion: - slow growing, typically aerotolerant anaerobic gram positive bacterium; - found in skin pores and the gut. - see A Microbial Biorealm page on the genus Propionibacterium and Propionibacterium Infections for e-Medicine Deep Infection after Rotator Cuff Repair. Infection after mini-open rotator cuff repair. J Shoulder Elbow Surg 2002;11:605-608. Propionibacterium acnes colonization of the human shoulder. Propionibacterium acnes: an agent of prosthetic joint infection and colonization. Propionibacterium acnes: an under-appreciated cause of post-neurosurgical infection. Propionibacterium spp. in prosthetic joint infections: a diagnostic challenge Arthroplastic and osteosynthetic infections due to Propionibacterium acnes: a retrospective study of 52 cases, 1995-2002. Microbiologic Diagnosis of Prosthetic Shoulder Infection using Implant Sonication. Species of Propionibacterium and Propionibacterium acnes types associated with orthopedic implants Positive Culture Rate in Revision Shoulder Arthroplasty