These authors reviewed patients who were reoperated on for infection after reversed shoulder arthroplasty between 1996 and 2011. The mean age was 71 (55-83) years. The involved implants were primary prostheses in 23 cases and revision prostheses in 9 cases. The average delay between the prosthesis implantation and the diagnosis of infection was 21 months (1-116).
Infections were largely caused by coagulase-negative staphylococci (56%) and Propionibacterium acnes (59%). The complication rate was 26%. At last follow-up, 26 patients appeared to be free of infection. After débridement with implant retention, the healing rate was only 54%. Single or two stage implant revision led to better functional results than implant removal, with superior healing rates (73% and 67%, respectively). Patients with low initial impairment (Constant score > 30) were not significantly improved by surgical treatment.
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