PMID- 27036925 OWN - NLM STAT- MEDLINE DCOM- 20171128 LR - 20181202 IS - 1532-8406 (Electronic) IS - 0883-5403 (Linking) VI - 31 IP - 9 DP - 2016 Sep TI - Clinical Analysis of Propionibacterium acnes Infection After Total Knee Arthroplasty. PG - 1986-9 LID - S0883-5403(16)00145-5 [pii] LID - 10.1016/j.arth.2016.02.025 [doi] AB - BACKGROUND: Propionibacterium acnes is a common cause of upper extremity arthroplasty infection and usually presents in an indolent subacute fashion. It is not well described how total knee arthroplasty (TKA) patients infected with P acnes present. METHODS: We retrospectively compared patients undergoing revision TKA for infection from P acnes and methicillin-sensitive Staphylococcal aureus (MSSA) in our institutional infection database. Patients were classified as having a periprosthetic joint infection based on the Musculoskeletal Infection Society criteria and were excluded if they had a polymicrobial culture. Patient demographics, preoperative laboratory values, microbiology data, and synovial fluid white blood cell (WBC) counts were analyzed. RESULTS: Sixteen patients with a P acnes and 30 with an MSSA TKA periprosthetic joint infection were identified. Median erythrocyte sedimentation rate was significantly higher in the MSSA group compared to the P acnes group (56.0 mm/h; interquartile range [IQR], 44.3-72.9 vs 23.0 mm/h; IQR, 18.5-52.0; respectively, P = .03) as were C-reactive protein levels (5.9 mg/dL; IQR, 3.7-26.9 vs 2.0 mg/dL; IQR, 0.5-14.0; respectively, P = .04). WBC count, synovial fluid WBC, and percentage of synovial polymorphonuclear cells were similar between groups. Mean time to culture was 8.3 +/- 2.0 days in the P acnes group and 1.8 +/- 0.8 days in the MSSA group. CONCLUSION: P acnes TKA infections are associated with more acute inflammatory symptoms than typically appreciated, and long hold anaerobic cultures up to 14 days are necessary to accurately identify this organism as the causative agent of TKA periprosthetic infection. CI - Copyright (c) 2016 Elsevier Inc. All rights reserved. FAU - Nodzo, Scott R AU - Nodzo SR AD - Department of Orthopedics, Hospital for Special Surgery, New York, New York. FAU - Westrich, Geoffrey H AU - Westrich GH AD - Department of Orthopedics, Hospital for Special Surgery, New York, New York. FAU - Henry, Michael W AU - Henry MW AD - Department of Infectious Disease, Hospital for Special Surgery, New York, New York. FAU - Miller, Andy O AU - Miller AO AD - Department of Infectious Disease, Hospital for Special Surgery, New York, New York. LA - eng PT - Journal Article DEP - 20160223 PL - United States TA - J Arthroplasty JT - The Journal of arthroplasty JID - 8703515 RN - 9007-41-4 (C-Reactive Protein) SB - IM MH - Adult MH - Aged MH - Arthritis, Infectious/*diagnosis/microbiology MH - Arthroplasty, Replacement, Knee/*adverse effects MH - Blood Sedimentation MH - C-Reactive Protein/analysis MH - Female MH - Gram-Positive Bacterial Infections/*diagnosis/microbiology MH - Humans MH - Leukocyte Count MH - Male MH - Middle Aged MH - Neutrophils MH - *Propionibacterium acnes MH - Prosthesis-Related Infections/*diagnosis/microbiology MH - Retrospective Studies OTO - NOTNLM OT - Propionibacterium acnes OT - clinical presentation OT - complications OT - periprosthetic infection OT - total knee arthroplasty EDAT- 2016/04/03 06:00 MHDA- 2017/11/29 06:00 CRDT- 2016/04/03 06:00 PHST- 2015/11/02 00:00 [received] PHST- 2016/01/13 00:00 [revised] PHST- 2016/02/08 00:00 [accepted] PHST- 2016/04/03 06:00 [entrez] PHST- 2016/04/03 06:00 [pubmed] PHST- 2017/11/29 06:00 [medline] AID - S0883-5403(16)00145-5 [pii] AID - 10.1016/j.arth.2016.02.025 [doi] PST - ppublish SO - J Arthroplasty. 2016 Sep;31(9):1986-9. doi: 10.1016/j.arth.2016.02.025. Epub 2016 Feb 23.