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Mizels J, Lewis DC, Tashjian RZ, Chalmers PN. Hydrogen Peroxide May Reduce the Risk for Revision Surgery and Infection in Primary Shoulder Arthroplasty: Two-year Follow-up From a Prospective, Blinded, Controlled Trial. J Am Acad Orthop Surg 2024:00124635-990000000-00990. [PMID: 38759230 DOI: 10.5435/jaaos-d-23-00376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 10/04/2023] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND The purpose of this study was to determine whether the addition of hydrogen peroxide to the preoperative skin preparation for primary total shoulder arthroplasty is associated with a difference in patient-reported outcomes, risk for postoperative infection, and risk for revision surgery at a minimum of 2-year follow-up. METHODS This was a prospective, blinded, and controlled trial, which included a consecutive series of patients undergoing primary shoulder arthroplasty. The control group underwent standard sterile skin preparation using ethyl alcohol and ChloraPrep applicators, and the peroxide group had the same preparation with the addition of hydrogen peroxide between the alcohol and ChloraPrep applications. We then compared patient-reported outcome scores (American Shoulder and Elbow Surgeons Shoulder Score [ASES], simple shoulder test [SST], visual analog scale [VAS]), infections, and revision surgeries between the two groups at 2-year follow-up. RESULTS Of the 61 patients included in the original study, 52 of 58 (85%) living patients agreed to participate in this study. No preoperative differences were observed between groups. No difference was observed in ASES, SST, or VAS scores at 2 years. More revision surgeries were done in the control group (7 versus 2, P = 0.268) and Cutibacterium acnes infections (2 versus 0, P = 0.168). CONCLUSION The addition of hydrogen peroxide to the preoperative skin preparation before primary shoulder arthroplasty is safe, and additional research is warranted to investigate whether it may decrease the risk for revision surgery and postoperative C acnes infection. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Joshua Mizels
- From the Department of Orthopaedic Surgery, University of Utah, Salt Lake City, UT
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Bdeir M, Lerchl A, Hetjens S, Schilder A, Gravius S, Baumgärtner T, Darwich A. One- vs. Two-Stage Revision for Periprosthetic Shoulder Infections: A Systematic Review and Meta-Analysis. Antibiotics (Basel) 2024; 13:440. [PMID: 38786168 PMCID: PMC11117334 DOI: 10.3390/antibiotics13050440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/28/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Periprosthetic shoulder infection (PSI) remains a challenging complication after shoulder arthroplasty. Therapeutic options include one- or two-stage revision, irrigation and debridement, and resection arthroplasty. With our systematic review and meta-analysis, we aimed to compare one- and two-stage revisions for periprosthetic shoulder joint infections and determine the most appropriate therapeutic procedure. We performed an extensive literature search in PubMed, Ovid Medline, Cochrane Library, Web of Science, and CINAHL and filtered out all relevant studies. The meta-analysis was performed using the random-effects model, heterogeneity was analyzed using I2, and publication bias was assessed using the Egger's test. A total of 8 studies with one-stage revisions, 36 studies with two-stage revisions, and 12 studies with both one-stage and two-stage revisions were included. According to the random-effects model, the reinfection rate for the entirety of the studies was 12.3% (95% Cl: 9.6-15.3), with a low-to-moderate heterogeneity of I2 = 47.72%. The reinfection rate of the one-stage revisions was 10.9%, which was significantly lower than the reinfection rate of the two-stage revisions, which was 12.93% (p = 0.0062). The one-stage revision rate was significantly lower with 1.16 vs. 2.25 revisions in the two-stage revision group (p < 0.0001). The postoperative functional outcome in one-stage-revised patients was comparable but not statistically significant (p = 0.1523). In one- and two-stage revisions, most infections were caused by Cutibacterium acnes. In summary, our systematic review and meta-analysis show the superiority of single-stage revision regarding reinfection and revision rates in periprosthetic shoulder joint infection.
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Affiliation(s)
- Mohamad Bdeir
- Department of Orthopaedic and Trauma Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany; (A.L.); (A.S.); (S.G.); (T.B.); (A.D.)
| | - Aimée Lerchl
- Department of Orthopaedic and Trauma Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany; (A.L.); (A.S.); (S.G.); (T.B.); (A.D.)
| | - Svetlana Hetjens
- Institute of Medical Statistics and Biomathematics, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany;
| | - Andreas Schilder
- Department of Orthopaedic and Trauma Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany; (A.L.); (A.S.); (S.G.); (T.B.); (A.D.)
| | - Sascha Gravius
- Department of Orthopaedic and Trauma Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany; (A.L.); (A.S.); (S.G.); (T.B.); (A.D.)
| | - Tobias Baumgärtner
- Department of Orthopaedic and Trauma Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany; (A.L.); (A.S.); (S.G.); (T.B.); (A.D.)
| | - Ali Darwich
- Department of Orthopaedic and Trauma Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany; (A.L.); (A.S.); (S.G.); (T.B.); (A.D.)
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Rodrigues-Lopes R, Silva F, Torres J. Periprosthetic shoulder infection management: one-stage should be the way: a systematic review and meta-analysis. J Shoulder Elbow Surg 2024; 33:722-737. [PMID: 37839627 DOI: 10.1016/j.jse.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 08/29/2023] [Accepted: 09/03/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND There is still no consensus among surgeons on whether to perform a 1- or 2-stage surgical revision in infected shoulder arthroplasties. The aim of this systematic review and meta-analysis is to rigorously synthesize published studies evaluating the clinical outcomes, recurrence of infection, and other clinical complications in order to discuss which is the best strategy for treating periprosthetic joint infection after shoulder arthroplasty. METHODS Upon research using the PubMed, Scopus, and Web of Science databases, in November 2022, studies that presented 1- or 2-stage surgical revision as a treatment for periprosthetic joint infection after shoulder arthroplasty and assessed the reinfection rate on these patients, as well as other clinical outcomes, with a minimum follow-up of 12 months, were included. Study quality was evaluated using the Methodological Index for Non-Randomized Studies (MINORS) score. Reinfection and complication rates were extracted, and pooled estimates were calculated using the random-effect model. RESULTS After careful screening, 44 studies were included, 5 reporting on 1-stage and 30 on 2-stage revisions and 9 assessing both strategies. A total of 185 shoulders were reported in 1-stage revision studies, whereas 526 shoulders were reported in 2-stage revision studies. The overall pooled random-effects reinfection rate was 6.68% (95% confidence interval [CI]: 3.76-10.13), with low heterogeneity (I2 = 28%, P = .03). One-stage revision showed a reinfection rate of 1.14% (95% CI: 0.00-4.88), whereas 2-stage revision analysis revealed a reinfection rate of 8.81% (95% CI: 4.96-13.33). There were significant statistical differences between 1- and 2-stage reinfection rates (P = .04). The overall pooled rate for other clinical complications was 16.76% (95% CI: 9.49-25.15), with high heterogeneity (I2 = 70%, P < .01). One-stage revision had a complication rate of 6.11% (95% CI: 1.58-12.39), whereas the 2-stage revision complication rate was 21.26% (95% CI: 11.51-32.54). This difference was statistically significant (P = .03). CONCLUSIONS This is the first systematic review and meta-analysis showing significant statistical differences between 1- and 2-stage surgical revision in infected shoulder arthroplasties. Provided the right conditions exist, 1-stage revision shows better results in infection control, with lower clinical complications and possible better clinical outcomes.
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Affiliation(s)
| | - Fábia Silva
- Department of Orthopaedics and Traumatology, University Hospital Center of São João, Porto, Portugal
| | - João Torres
- Faculty of Medicine of the University of Porto, Porto, Portugal; Department of Orthopaedics and Traumatology, University Hospital Center of São João, Porto, Portugal
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Torrens C, Bellosillo B, Gibert J, Suárez-López A, Santana F, Alier A. Are Cutibacterium acnes delivered from skin to deep tissues in primary reverse shoulder arthroplasty? A prospective study. Arch Orthop Trauma Surg 2024; 144:635-640. [PMID: 37994944 DOI: 10.1007/s00402-023-05125-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/27/2023] [Indexed: 11/24/2023]
Abstract
INTRODUCTION The objective of this study is to determine whether the deep tissues are inoculated during surgery with the Cutibacterium acnes still present in the skin after the surgical preparation in reverse shoulder arthroplasties. MATERIALS AND METHODS Prospective study including patients undergoing surgery with reverse shoulder arthroplasty. All the patients received preoperative antibiotic prophylaxis with cefazolin (2 g IV) and the skin was prepared with 2% chlorhexidine gluconate and 70% isopropyl alcohol. From all the patients, 9 cultures were obtained after the antibiotic was administrated and the skin surgically prepared. The cultures were sent to isolate C. acnes. DNA was extracted from the C. acnes isolated colonies. Isolate nucleotide distances were calculated using the Genome-based distance matrix calculator from the Enveomics collection toolbox. RESULTS The study included 90 patients. C. acnes was isolated in 24 patients (26.6%) with a total of 61 positive cultures. There were 12 phylotype II, 27 IB and 22 IA. In 9 patients, C. acnes was present in both skin and deep tissues, and they constituted the sample to be studied by means of genomic analysis. In 7 out of the 9 patients, deep tissue samples clustered closer to at least one of its corresponding skin isolates when compared to the other independent bacterial ones. CONCLUSIONS The C. acnes present in the skin at the beginning of the surgery are the same as those found in the deep tissues at the end of the surgery. This result strengthens the possibility that the C. acnes is delivered from the skin to the deep tissues.
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Affiliation(s)
- Carlos Torrens
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain.
| | - Beatriz Bellosillo
- Pathology Department, Hospital del Mar, Barcelona, Spain
- Cancer Research Program, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Joan Gibert
- Pathology Department, Hospital del Mar, Barcelona, Spain
- Cancer Research Program, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Amaya Suárez-López
- Microbiology Service, Laboratori de Referència de Catalunya, Hospital del Mar, Barcelona, Spain
| | - Fernando Santana
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain
| | - Albert Alier
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain
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de Giovanni R, Guarino A, Rossi V, Bruzzese D, Mariconda M, Cozzolino A. Is the Number of Citations Related to the Study Methodology in Shoulder Arthroplasty Literature? A Bibliometric and Statistical Analysis of Current Evidence. J Shoulder Elb Arthroplast 2024; 8:24715492231223346. [PMID: 38186673 PMCID: PMC10771075 DOI: 10.1177/24715492231223346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/24/2023] [Accepted: 12/11/2023] [Indexed: 01/09/2024] Open
Abstract
Background We reviewed the shoulder arthroplasty (SA) literature to correlate citations, methodological characteristics and quality of most-cited articles in this field. We hypothesized that a greater number of citations would be found for high-quality clinical studies. Methods We searched the Web of Knowledge database for the 50 most-cited articles about SA and collected author name, publication year, country of origin, journal, article type, level of evidence (LoE), subject of paper, type of arthroplasty and metrics (number of citations and citation rate). Coleman Methodology Score (CMS) was computed for clinical articles. Statistical analysis of variance and correlation coefficients were used to investigate the relationship between different variables. Results Out of the selected 50 studies on SA, 26% were nonclinical. There were 15,393 citations overall (mean 307.8), with a mean 19.5 citations per year (range 48.3-6.7). Thirty or 60% of all articles were LoE IV. All studies were published between 1984 and 2011 in 8 journals. Reverse SA (RSA) was the most common subject (36% of studies). The United States was the country responsible for most contributions (50% of studies). CMS ranged from 81 to 38 (mean 59.6). RSA received the highest number of citations (P < .001), independently from country of origin (P = .137) and LoE (P = .723). CMS correlated with citation rate (r = 0.397; P = .013) and publication year (tau = 0.397; P = .013), but not with LoE (P = .204). Conclusion In SA literature, citation rate positively correlates with methodological quality of a study, independently from publication country and LoE. Among most-cited papers, RSA is the most common standalone subject.
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Affiliation(s)
- Roberto de Giovanni
- Department of Public Health, Orthopedic Unit, “Federico II” University, Naples, Italy
| | - Amedeo Guarino
- Department of Public Health, Orthopedic Unit, “Federico II” University, Naples, Italy
| | - Valentina Rossi
- Department of Public Health, Orthopedic Unit, “Federico II” University, Naples, Italy
| | - Dario Bruzzese
- Department of Public Health, Medical Statistics, “Federico II” University, Naples, Italy
| | - Massimo Mariconda
- Department of Public Health, Orthopedic Unit, “Federico II” University, Naples, Italy
| | - Andrea Cozzolino
- Department of Public Health, Orthopedic Unit, “Federico II” University, Naples, Italy
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Hershey ML, Trenga AP, Roge SA, Fisher MR, Grindel SI. Revision reverse shoulder arthroplasty has similar outcomes to primary reverse shoulder arthroplasty at 5 Year average follow-up. J Orthop 2023; 46:150-155. [PMID: 37997602 PMCID: PMC10663749 DOI: 10.1016/j.jor.2023.10.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 10/29/2023] [Indexed: 11/25/2023] Open
Abstract
Background Shoulder arthroplasty is a successful procedure that provides pain relief and improvements in function and range of motion. Anatomic and reverse shoulder arthroplasty are both effective procedures, and their indications continue to expand. We look at the outcomes of revision reverse total shoulder arthroplasty and compare it to the outcomes of primary reverse and anatomic total shoulder arthroplasty. Methods We identified patients undergoing total shoulder arthroplasty at our institution between the years of 2010 and 2020. Data was prospectively collected and retrospectively reviewed for post-operative range of motion and strength in patients with revision surgery and compared to controls. Measurements were collected preoperatively and postoperatively including range of motion and strength in the affected and unaffected shoulder. We collected patient reported outcome measures in person and via phone to identify subjective outcomes of total shoulder arthroplasty. Average final follow-up was 5.27 years. Results Our total patient sample was split between three groups: those with primary anatomic arthroplasty those who underwent primary reverse arthroplasty, and those who were revised to a reverse shoulder arthroplasty. All three groups had significant improvements in abduction and forward elevation from their pre-operative baseline to two years follow-up. Primary reverse had a significant improvement over revision reverse in abduction at one year follow-up. For all other range of motion measurements, there was no statistically significant difference at 2 years between primary and revision reverse shoulder arthroplasty. Patient reported outcomes had a significant increase from pre-op to most recent follow-up in all three groups. Conclusion Overall, our data suggest there is an improvement in outcomes with both primary and revision surgeries, and that results after revision reverse total shoulder arthroplasty may be comparable to primary reverse total shoulder arthroplasty.
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Affiliation(s)
- Maxwell L. Hershey
- Medical College of Wisconsin, Department of Orthopaedic Surgery, Milwaukee, WI, USA
| | - Anthony P. Trenga
- Medical College of Wisconsin, Department of Orthopaedic Surgery, Milwaukee, WI, USA
| | - Seth A. Roge
- Medical College of Wisconsin, Department of Orthopaedic Surgery, Milwaukee, WI, USA
| | - Max R. Fisher
- Medical College of Wisconsin, Department of Orthopaedic Surgery, Milwaukee, WI, USA
| | - Steven I. Grindel
- Medical College of Wisconsin, Department of Orthopaedic Surgery, Milwaukee, WI, USA
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Fernández-Rodríguez D, Cho J, Parvizi N, Khan AZ, Parvizi J, Namdari S. Next-generation Sequencing Results Require Higher Inoculum for Cutibacterium acnes Detection Than Conventional Anaerobic Culture. Clin Orthop Relat Res 2023; 481:2484-2491. [PMID: 37341498 PMCID: PMC10642882 DOI: 10.1097/corr.0000000000002738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 04/16/2023] [Accepted: 05/22/2023] [Indexed: 06/22/2023]
Abstract
BACKGROUND Cutibacterium acnes has been described as the most common causative microorganism in prosthetic shoulder infections. Conventional anaerobic culture or molecular-based technologies are usually used for this purpose, but little to no concordance between these methodologies (k = 0.333 or less) has been observed. QUESTIONS/PURPOSES (1) Is the minimum C. acnes load for detection higher for next-generation sequencing (NGS) than for anaerobic conventional culture? (2) What duration of incubation is necessary for anaerobic culture to detect all C. acnes loads? METHODS Five C. acnes strains were tested for this study: Four strains were causing infection and were isolated from surgical samples. Meanwhile, the other was a reference strain commonly used as a positive and quality control in microbiology and bioinformatics. To create inoculums with varying degrees of bacterial load, we began with a standard bacterial suspension at 1.5 x 10 8 colony-forming units (CFU)/mL and created six more diluted suspensions (from 1.5 x 10 6 CFU/mL to 1.5 x 10 1 CFU/mL). Briefly, to do so, we transferred 200 µL from the tube with the highest inoculum (for example, 1.5 x 10 6 CFU/mL) to the following dilution tube (1.5 x 10 5 CFU/mL; 1800 µL of diluent + 200 µL of 1.5 x 10 6 CFU/mL). We serially continued the transfers to create all diluted suspensions. Six tubes were prepared per strain. Thirty bacterial suspensions were tested per assay. Then, 100 µL of each diluted suspension was inoculated into brain heart infusion agar with horse blood and taurocholate agar plates. Two plates were used per bacterial suspension in each assay. All plates were incubated at 37°C in an anaerobic chamber and assessed for growth after 3 days of incubation and daily thereafter until positive or Day 14. The remaining volume of each bacterial suspension was sent for NGS analysis to identify bacterial DNA copies. We performed the experimental assays in duplicate. We calculated mean DNA copies and CFUs for each strain, bacterial load, and incubation timepoint assessed. We reported detection by NGS and culture as a qualitative variable based on the identification or absence of DNA copies and CFUs, respectively. In this way, we identified the minimum bacterial load detected by NGS and culture, regardless of incubation time. We performed a qualitative comparison of detection rates between methodologies. Simultaneously, we tracked C. acnes growth on agar plates and determined the minimum incubation time in days required for CFU detection in all strains and loads examined in this study. Growth detection and bacterial CFU counting were performed by three laboratory personnel, with a high intraobserver and interobserver agreement (κ > 0.80). A two-tailed p value below 0.05 was considered statistically significant. RESULTS Conventional cultures can detect C. acnes at a load of 1.5 x 10 1 CFU/mL, whereas NGS can detect bacteria when the concentration was higher, at 1.5 x 10 2 CFU/mL. This is represented by a lower positive detection proportion (73% [22 of 30]) for NGS than for cultures (100% [30 of 30]); p = 0.004). By 7 days, anaerobic cultures were able to detect all C. acnes loads, even at the lowest concentrations. CONCLUSION When NGS is negative and culture is positive for C. acnes , there is likely a low bacterial load. Holding cultures beyond 7 days is likely unnecessary. CLINICAL RELEVANCE This is important for treating physicians to decide whether low bacterial loads necessitate aggressive antibiotic treatment or whether they are more likely contaminants. Cultures that are positive beyond 7 days likely represent contamination or bacterial loads even below the dilution used in this study. Physicians may benefit from studies designed to clarify the clinical importance of the low bacteria loads used in this study at which both methodologies' detection differed. Moreover, researchers might explore whether even lower C. acnes loads have a role in true periprosthetic joint infection.
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Affiliation(s)
- Diana Fernández-Rodríguez
- Rothman Orthopaedic Institute, Philadelphia, PA, USA
- Plan de Estudios Combinados en Medicina (PECEM) MD/PhD, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jeongeun Cho
- Rothman Orthopaedic Institute, Philadelphia, PA, USA
| | | | - Adam Z. Khan
- Rothman Orthopaedic Institute, Philadelphia, PA, USA
| | - Javad Parvizi
- Rothman Orthopaedic Institute, Philadelphia, PA, USA
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Jacquot A, Samargandi R, Peduzzi L, Mole D, Berhouet J. Infected Shoulder Arthroplasty in Patients Younger than 60 Years: Results of a Multicenter Study. Microorganisms 2023; 11:2770. [PMID: 38004781 PMCID: PMC10673608 DOI: 10.3390/microorganisms11112770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Background: Periprosthetic joint infection (PJI) after shoulder arthroplasty remains a significant complication. This study aimed to explore the epidemiology and risk factors of shoulder PJI in patients aged 60 and younger, analyze treatment options, and evaluate outcomes after 1-year follow-up. Methods: In this retrospective multicentric observational study, data from 1404 shoulders in patients under 60 who underwent primary shoulder arthroplasty were analyzed. Patients with PJI and at least 1-year follow-up after infection treatment were included. Results: The study identified 55 shoulders with PJI, resulting in a 2.35% infection rate after primary shoulder arthroplasty in the young population. Male gender and reverse shoulder arthroplasty were risk factors for infection, while previous surgeries did not significantly contribute. The most common causative agents were Cutibacterium acnes and Staphylococcus epidermidis. Open washout had a 52.9% success rate for acute infections, while one-stage and two-stage revisions achieved infection control rates of 91.3% and 85.7%, respectively. Resection arthroplasty had an 81.8% success rate but poorer functional outcomes. Conclusions: PJI following shoulder arthroplasty in young patients is a significant concern. Preoperative planning should be carefully considered to minimize infection risk. Treatment options such as open washout and one-stage and two-stage revisions offer effective infection control and improved functional outcomes. Resection arthroplasty should be reserved for complex cases where reimplantation is not a viable option.
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Affiliation(s)
- Adrien Jacquot
- Centre for Chirurgie des Articulations et du Sport (ARTICS), 24 rue du XXIème Régiment d’Aviation, 54000 Nancy, France; (A.J.); (D.M.)
| | - Ramy Samargandi
- Service de Chirurgie Orthopédique et Traumatologique, CHRU Trousseau, Faculté de Médecine de Tours, Université de Tours, 1C Avenue de la République, 37170 Chambray-les-Tours, France;
- Department of Orthopedic Surgery, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Lisa Peduzzi
- Service de Chirurgie Orthopédique, Centre Hospitalo-Universitaire Nancy-Emile Galle, 49, rue Hermite CS 5211, 54052 Nancy, France;
| | - Daniel Mole
- Centre for Chirurgie des Articulations et du Sport (ARTICS), 24 rue du XXIème Régiment d’Aviation, 54000 Nancy, France; (A.J.); (D.M.)
| | - Julien Berhouet
- Service de Chirurgie Orthopédique et Traumatologique, CHRU Trousseau, Faculté de Médecine de Tours, Université de Tours, 1C Avenue de la République, 37170 Chambray-les-Tours, France;
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Tak LJ, Shin MK, Yoo JI, Cho MC, Kim W. Development of droplet digital PCR-based detection of bacterial pathogens in prosthetic joint infection: a preliminary study using a synthesized model plasmid. Front Cell Infect Microbiol 2023; 13:1301446. [PMID: 38029245 PMCID: PMC10651726 DOI: 10.3389/fcimb.2023.1301446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
Periprosthetic joint infection (PJI) can be diagnosed to characterize the microorganisms constituting a biofilm, which is an essential procedure for proper treatment. The gold standard method for detecting and identifying the causative microorganism is culture of microorganisms from patients-derived sample.; however, this method takes a long time and has low sensitivity. To compensate for these limitations, identification methods based on real-time PCR (RT-PCR) have been widely used. However, RT-PCR also has limitations, including low sensitivity and the requirement of a standard curve for quantification. Therefore, to prevent significant proliferation of pathogenic bacteria, it is important to detect a limited number of infectious bacteria during early stages of PJI. In the present study, we developed droplet digital PCR-based detection of bacterial pathogens in PJI. And we evaluated the analytical performance of the assay using a model plasmid, based on the 16S ribosomal DNA sequence of target bacteria commonly found in PJI. We also prepared genomic DNA extracted from E. coli, S. aureus, and S. epidermidis to test whether ddPCR provides better sensitivity and quantification of the target sequences. ddPCR detected 400 attograms of target DNA, which was more than 10 times less than that detected by real-time PCR using synthesized plasmid. In addition, ddPCR detected target regions from genomic DNA of 50 femtograms for E. coli, 70 femtograms for S. epidermidis, and 90 femtograms for S. aureus. The results indicate that ddPCR has the potential to decrease the microbial detection limit and provide precise detection, signifying its effectiveness for early PJI.
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Affiliation(s)
- Lee-Jung Tak
- Department of Convergence Medical Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Min-Kyoung Shin
- Department of Microbiology, Department of Convergence Medical Science, and Institute of Health Sciences, School of Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Jun-Il Yoo
- Department of Orthopedic Surgery, Inha University Hospital, Incheon, Republic of Korea
| | - Min-Chul Cho
- Departments of Laboratory Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Wanil Kim
- Department of Biochemistry, Department of Convergence Medical Science, and Institute of Health Sciences, School of Medicine, Gyeongsang National University, Jinju, Republic of Korea
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Torrens C, Marí R, Puig-Verdier L, Santana F, Alier A, García-Jarabo E, Gómez-Sánchez A, Corvec S. Functional outcomes and complications of patients contaminated with Cutibacterium acnes during primary reverse shoulder arthroplasty: study at two- and five-years of follow-up. INTERNATIONAL ORTHOPAEDICS 2023; 47:2827-2833. [PMID: 37710071 DOI: 10.1007/s00264-023-05971-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 09/01/2023] [Indexed: 09/16/2023]
Abstract
PURPOSE The objective of the study was to compare the functional outcomes and the complication rate of the patients with C. acnes contamination at the end of the primary reverse shoulder arthroplasty (RSA) surgery to those patients without C. acnes contamination. METHOD A total of 162 patients were included. In all cases, skin and deep tissue cultures were obtained. A molecular typing characterization of the C. acnes strains was performed. Functional outcomes were assessed with the Constant score at the two and five year follow-up and all complications were also recorded. RESULTS A total of 1380 cultures were obtained from the 162 primary RSA surgeries. Of those, 96 turned out to be positive for C. acnes. There were 25 patients with positive cultures for C. acnes. The overall postoperative Constant score was not significantly different between those patients having C. acnes-positive cultures and those with negative cultures at the two and five year follow-up (59.2 vs. 59.6 at two years, p 0.870, and 59.5 vs. 62.4 at five years, p 0.360). Patients with positive cultures presented a higher complication rate (p 0.001) with two infections, one revision surgery, and one dislocation. CONCLUSION Patients ending up with C. acnes-positive cultures after primary shoulder arthroplasty surgery do not have worse clinical outcomes when compared to patients having negative cultures, but a greater number of complications were found in those patients with C. acnes-positive cultures.
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Affiliation(s)
- Carlos Torrens
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain.
| | - Raquel Marí
- Department of Orthopedics, Sant Joan de Déu Hospital Palma Inca, Palma, Mallorca, Spain
| | - Lluís Puig-Verdier
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain
| | - Fernando Santana
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain
| | - Albert Alier
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Passeig Marítim 25-29, 08003, Barcelona, Spain
| | | | | | - Stèphane Corvec
- Service de Bactériologie et des contrôles microbiologiques, CHU Nantes, Université de Nantes, INSERM, INCIT UMR 1302 F- 44000, Nantes, France
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11
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Tonotsuka H, Sugiyama H, Funasaki H, Yoshida M, Kato S, Tanaka K, Saito M. Chronological changes in the rate of surgical field contamination in the shoulder joint. J Orthop Sci 2023:S0949-2658(23)00267-1. [PMID: 37838595 DOI: 10.1016/j.jos.2023.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/04/2023] [Accepted: 09/28/2023] [Indexed: 10/16/2023]
Abstract
BACKGROUND In shoulder surgery, low-virulence bacteria such as Cutibacterium acnes and coagulase-negative staphylococci can cause postoperative infection. However, the degree of sterility during surgery after disinfection is not known, and the efficacy of double skin preparation for such bacteria is unclear. This study aimed to evaluate chronological changes in the surgical field contamination rate in the shoulder joint and to compare single and double skin preparation. METHODS In total, 126 shoulders in 121 patients undergoing shoulder surgery (64 men, 62 women; mean age 64 years) were enrolled. Patients were divided into two groups: single skin preparation, where the site was painted with 10% povidone iodine, and double skin preparation, where the site was treated with 1% chlorhexidine gluconate/83% isopropyl alcohol and painted 10% povidone iodine. Swab samples from the axillary and proximal areas in the surgical field were collected chronologically before starting surgery and at 30, 60, and 120 min after starting surgery (MAS). The contamination rate of each sample was compared and detected species were evaluated. RESULTS The contamination rate for the axillary area was 48.4%, 85.9%, 95.3%, and 97.1% in the single-preparation group and 32.3%, 72.6%, 87.1%, and 91.2% in the double-preparation group before starting surgery and 30, 60, and 120 MAS, respectively, and that the proximal area was 12.5%, 26.6%, 29.7%, and 35.3% in the single-preparation group and 16.1%, 19.4%, 27.4%, and 38.2% in the double-preparation group, respectively. Significant differences were not seen between the groups by area or time point. Most detected species were Cutibacterium acnes and coagulase-negative staphylococci. CONCLUSIONS The incidence of surgical field contamination in shoulder joint was high from immediately after starting surgery. In the axillary area, the contamination rates exceeded 70% from 30 MAS in both groups. Measures against infection should be instituted considering these findings when performing shoulder surgery.
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Affiliation(s)
- Hisahiro Tonotsuka
- Department of Orthopaedic Surgery, Kanagawa Rehabilitation Hospital, Japan; Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan.
| | - Hajime Sugiyama
- Department of Orthopaedic Surgery, Kanagawa Rehabilitation Hospital, Japan; Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan
| | - Hiroki Funasaki
- Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan
| | - Mamoru Yoshida
- Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan
| | - Soki Kato
- Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan
| | - Kota Tanaka
- Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan
| | - Mitsuru Saito
- Department of Orthopaedic Surgery, The Jikei University School of Medicine, Japan
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12
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Agarwal AR, Cuero KJ, Stadecker M, Meshram P, Sharma S, Zimmer ZR, Best MJ. Impact of preoperative urinary tract infection on postoperative outcomes following total shoulder arthroplasty for osteoarthritis. Shoulder Elbow 2023; 15:100-110. [PMID: 37692880 PMCID: PMC10492532 DOI: 10.1177/17585732221127590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/13/2022] [Accepted: 09/01/2022] [Indexed: 09/12/2023]
Abstract
Introduction As the utilization of total shoulder arthroplasty (TSA) increases, it is essential to identify risk factors associated with postoperative complications. Urinary tract infection (UTI) is one such example. Our objective is to identify whether UTI is associated with increased rates of prosthetic joint infection (PJI) and determine whether its treatment reduces PJI rates. Methods Patients who underwent primary TSA for glenohumeral osteoarthritis between 2010 and 2019 with minimum two-year follow-up were identified in a national database (PearlDiver Technologies) using Current Procedural Terminology and International Classification of Diseases codes. These patients were stratified into two cohorts: those with preoperative UTI within two weeks of TSA and those without. The preoperative UTI cohort was stratified into those treated and those untreated prior to TSA. Univariate and multivariable analyses were performed. Results Following multivariable analysis, there were significantly higher odds of postoperative anemia, pulmonary embolism, and death in the UTI cohort. Comparing treated to untreated UTI, there were no significant differences in multivariable analysis for any 90-day medical or two-year surgical complications. Discussion This study showed that UTI was not associated with increased rates of PJI. UTI was, however, associated with postoperative medical complications that surgeons should be aware of.
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Affiliation(s)
- Amil R. Agarwal
- Department of Orthopedic Surgery, George Washington Hospital, Washington, DC, USA
| | - Kendrick J. Cuero
- Department of Orthopedic Surgery, George Washington Hospital, Washington, DC, USA
| | - Monica Stadecker
- Department of Orthopedic Surgery, George Washington Hospital, Washington, DC, USA
| | - Prashant Meshram
- Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, MD, USA
| | - Sribava Sharma
- Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, MD, USA
| | - Zachary R. Zimmer
- Department of Orthopedic Surgery, George Washington Hospital, Washington, DC, USA
| | - Matthew J. Best
- Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, MD, USA
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13
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Karimi A, Jalalpour P, Reddy RP, Sabzevari S, Keeling LE, Lin A. Diagnostic arthroscopy for periprosthetic shoulder arthroplasty infections: a systematic review and meta-analysis. JSES Int 2023; 7:835-841. [PMID: 37719814 PMCID: PMC10499863 DOI: 10.1016/j.jseint.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023] Open
Abstract
Background Periprosthetic joint infection of the shoulder (PJI) is a devastating complication with a reported incidence of 1%-15.4% and is often difficult to diagnose with current diagnostic tools including serologic tests and arthrocentesis. This systematic review evaluates the reliability and validity of arthroscopic biopsy in the current literature for the diagnosis of shoulder PJI. Methods MEDLINE, Scopus, Web of Sciences, Google Scholar, and Cochrane databases were queried electronically from inception to June 2022 for publications reporting diagnostic accuracy of shoulder arthroscopic biopsy for detecting infection after anatomic total shoulder arthroplasty, shoulder hemiarthroplasty, or reverse total shoulder arthroplasty. This systematic review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Results After exclusion, our meta-analysis consisted of 7 articles with a total of 112 patients. The estimated pooled sensitivity and specificity of arthroscopic biopsy for confirmation of shoulder periprosthetic infection were 0.87 (95% confidence interval [CI]: 0.73-0.95) and 0.79 (95% CI: 0.67-0.88), respectively. The pooled positive likelihood ratio and negative likelihood ratio were 4.15 (95% CI: 2.57, 6.70) and 0.17 (95% CI: 0.08, 0.36), respectively. The aggregate positive predictive value was 73.58% (95% CI: 63.29%-81.82%), and aggregate negative predictive value was 89.83% (95% CI: 80.59%-94.95%). The diagnostic odds ratio of arthroscopic biopsy was 19.92 (95% CI: 4.96-79.99). Conclusion Arthroscopic biopsy in patients suspected of shoulder PJI has good diagnostic accuracy, with high sensitivity and specificity. Given the various biopsy protocols (such as devices, numbers, locations, etc.), further prospective studies are necessary to define the future role of arthroscopic biopsy in diagnosis and treatment.
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Affiliation(s)
- Amin Karimi
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, Pittsburgh, PA, USA
- Research Development Unit, Department of Orthopedic Surgery, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pooyan Jalalpour
- Research Development Unit, Department of Orthopedic Surgery, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rajiv P Reddy
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, Pittsburgh, PA, USA
| | - Soheil Sabzevari
- Memorial Sloan Kettering Cancer Center, Weill Cornell University, New York City, NY, USA
| | - Laura E Keeling
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, Pittsburgh, PA, USA
| | - Albert Lin
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, Pittsburgh, PA, USA
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14
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Schick S, Elphingstone J, Murali S, Carter K, Davis W, McGwin G, Evely T, Ponce B, Momaya A, Brabston E. The incidence of shoulder arthroplasty infection presents a substantial economic burden in the United States: a predictive model. JSES Int 2023; 7:636-641. [PMID: 37426907 PMCID: PMC10328787 DOI: 10.1016/j.jseint.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023] Open
Abstract
Background Periprosthetic joint infections (PJIs) are a major cause of morbidity after shoulder arthroplasty. Prior national database studies have estimated the trends of shoulder PJI up to 2012.21 Since 2012, the landscape of shoulder arthroplasty has changed drastically with the expanding popularity of reverse total shoulder arthroplasty. The dramatic growth in primary shoulder arthroplasties is likely paralleled with an increase of PJI case volume. The purpose of this study is to quantify the rise in shoulder PJIs and the economic stress they currently place on the American healthcare system as well as the toll they will incur over the coming decade. Methods The Nationwide Inpatient Sample database was queried for primary and revision anatomic total shoulder arthroplasty, reverse total shoulder arthroplasty, and hemiarthroplasty from 2011-2018. Multivariate regression was used to predict cases and charges through the year 2030 adjusted to 2021 purchasing power parity. Results From 2011 to 2018, PJI was found to be 1.1% shoulder arthroplasties, from 0.8% (2011) to 1.4% (2018). Anatomic total shoulder arthroplasty experienced the greatest proportion of infections at 2.0%, followed by hemiarthroplasty at 1.0% and reverse total shoulder arthroplasty at 0.3%. Total hospital charges grew 324%, from $44.8 million (2011) to $190.3 million (2018). Our regression model projects 176% growth in cases and 141% growth in annual charges by 2030. Conclusion This study demonstrates the large economic burden that shoulder PJIs pose on the American healthcare system, which is predicted to reach nearly $500 million in charges annually by 2030. Understanding trends in procedure volume and hospital charges will be critical in evaluating strategies to reduce shoulder PJIs.
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Affiliation(s)
- Samuel Schick
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Joseph Elphingstone
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sudarsan Murali
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Karen Carter
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - William Davis
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Gerald McGwin
- Department of Epidemiology, University of Alabama at Birmingham School of Public Health, Birmingham, AL, USA
| | - Thomas Evely
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Amit Momaya
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Eugene Brabston
- Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
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15
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Cochrane N, Kim B, Kelly P, Seidelman J, Seyler T, Klifto C, Jiranek W. Cutibacterium positive cultures in total joint arthroplasty: a comparison of the hip, knee, and shoulder. INTERNATIONAL ORTHOPAEDICS 2023:10.1007/s00264-023-05804-y. [PMID: 37059870 DOI: 10.1007/s00264-023-05804-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/01/2023] [Indexed: 04/16/2023]
Abstract
PURPOSE Cutibacterium spp. (formerly Propionibacterium) is a slow growing, Gram-positive, anaerobic bacteria and is an emerging clinical entity in prosthetic joint infection (PJI). This study compares the presentation, surgical management, and post-operative antibiotic therapy of patients with positive intraoperative cultures during revision total joint arthroplasty (TJA) of the hip, knee, and shoulder. METHODS This was a retrospective cohort study of patients from 2014 to 2020 of 57 revision TJAs (27 total hip arthroplasty (THA), 17 total shoulder arthroplasty (TSA), and 13 total knee arthroplasty (TKA)) with intraoperative cultures positive for Cutibacterium at a tertiary academic centre. Patient demographics, pre-operative labs, radiographs, and aspirate results were collected. Intraoperative data was reviewed. Post-operative antibiotic therapy and repeat infections were recorded. Data was compared with univariate analyses. RESULTS There was no significant difference in pre-operative lab values between the cohorts. All cohorts had > 58% radiographic lucency. Revision TSA patients had significantly fewer pre-operative aspirates. Six patients undergoing revision THA, three TKA and one TSA had a repeat infection requiring further surgery. Four in the THA cohort and one in the TKA cohort with repeat infections did not receive prolonged antibiotic therapy. CONCLUSION Cutibacterium is an infectious agent that can present in an indolent fashion after TJA. It commonly causes progressive radiographic lucency. The workup and post-operative management differs in the hip, knee, and shoulder, which is likely due to existing literature guiding physician practice. In all joints, Cutibacterium is a virulent pathogen that can cause repeat infections requiring surgical treatment.
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Affiliation(s)
- Niall Cochrane
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Billy Kim
- School of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Patrick Kelly
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA.
| | - Jessica Seidelman
- Department of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
| | - Thorsten Seyler
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Christopher Klifto
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - William Jiranek
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
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16
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Macken AA, Prkić A, van Oost I, Spekenbrink-Spooren A, The B, Eygendaal D. Implant survival of total elbow arthroplasty: analysis of 514 cases from the Dutch Arthroplasty Registry. Bone Jt Open 2023; 4:110-119. [PMID: 37051858 PMCID: PMC9999123 DOI: 10.1302/2633-1462.42.bjo-2022-0152.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
The aim of this study is to report the implant survival and factors associated with revision of total elbow arthroplasty (TEA) using data from the Dutch national registry. All TEAs recorded in the Dutch national registry between 2014 and 2020 were included. The Kaplan-Meier method was used for survival analysis, and a logistic regression model was used to assess the factors associated with revision. A total of 514 TEAs were included, of which 35 were revised. The five-year implant survival was 91%. Male sex, a higher BMI, and previous surgery to the same elbow showed a statistically significant association with revision (p < 0.036). Of the 35 revised implants, ten (29%) underwent a second revision. This study reports a five-year implant survival of TEA of 91%. Patient factors associated with revision are defined and can be used to optimize informed consent and shared decision-making. There was a high rate of secondary revisions.
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Affiliation(s)
- Arno A Macken
- Department of Orthopaedics and Sports Medicine, Erasmus Medical Centre, Rotterdam, the Netherlands
- Department of Orthopaedic Surgery, Amphia Hospital, Breda, the Netherlands
| | - Ante Prkić
- Department of Orthopaedics and Sports Medicine, Erasmus Medical Centre, Rotterdam, the Netherlands
- Department of Orthopaedic Surgery, Amphia Hospital, Breda, the Netherlands
| | - Iris van Oost
- Foundation for Orthopaedic Research Care & Education (FORCE), Amphia Hospital, Breda, the Netherlands
| | | | - Bertram The
- Department of Orthopaedic Surgery, Amphia Hospital, Breda, the Netherlands
| | - Denise Eygendaal
- Department of Orthopaedics and Sports Medicine, Erasmus Medical Centre, Rotterdam, the Netherlands
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17
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Miller BS, Olszewski AM, Bedi A. A Microcurrent Dressing Reduces Cutibacterium Acnes Colonization in Patients Undergoing Shoulder Arthroplasty or Arthroscopy: A Prospective Case Series. HSS J 2023; 19:92-96. [PMID: 36776518 PMCID: PMC9837413 DOI: 10.1177/15563316221100989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/25/2022] [Indexed: 02/14/2023]
Abstract
Background: Cutibacterium acnes infections in the shoulder remain a significant concern in the setting of shoulder arthroplasty. Purpose: We sought to evaluate the efficacy of a microcurrent dressing in reducing C. acnes skin colonization and thereby reducing the risk of periprosthetic joint infection of the shoulder. Methods: This study was designed as a prospective case series. From October 2017 to February 2019, patients undergoing elective shoulder arthroplasty or arthroscopic shoulder surgery at a major academic medical center were offered enrollment; they signed an informed consent to participate. Patients under the age of 18, scheduled for revision shoulder arthroplasty, or with sensitivity or allergy to silver, zinc, or latex were excluded. Subjects underwent skin culture swab of the shoulder in the mid-point of the planned deltopectoral incision. The JumpStart (Arthrex; Naples, FL) microcurrent dressing was then placed over the area of the planned incision, and a full-thickness skin biopsy was harvested from the incision at the initiation of the surgical procedure. All specimens were cultured for C. acnes by the hospital's clinical microbiology laboratory with standard anaerobic technique. Results: Thirty-one subjects were enrolled in the study. Those who demonstrated no growth at baseline for the control specimen were excluded from further analysis (N = 11), given the absence of preoperative C. acnes colonization. Culture results from the 20 remaining subjects revealed significantly diminished C. acnes skin growth at the time of surgery compared to baseline. Sixty percent (12 of 20) of the subjects with positive skin swabs at baseline demonstrated no growth in the skin biopsy specimens at the time of surgery. There were no adverse events associated with the application of the microcurrent dressing. Conclusion: This prospective case series found that preoperative application of a microcurrent dressing resulted in significantly diminished C. acnes skin burden at the time of surgery in patients undergoing elective shoulder arthroplasty or arthroscopic shoulder surgery. Further study is warranted to investigate whether this preoperative intervention may contribute to a reduction in perioperative infections, including prosthetic joint infection.
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Affiliation(s)
- Bruce S. Miller
- Department of Orthopaedic Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
- MedSport, University of Michigan Sports Medicine Program, University of Michigan, Ann Arbor, MI, USA
| | - Adam M. Olszewski
- Department of Orthopaedic Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Asheesh Bedi
- Department of Orthopaedic Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
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18
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Skedros JG, Finlinson ED, Luczak MG, Cronin JT. Septic Olecranon Bursitis With Osteomyelitis Attributed to Cutibacterium acnes: Case Report and Literature Overview of the Dilemma of Potential Contaminants and False-Positives. Cureus 2023; 15:e34563. [PMID: 36879721 PMCID: PMC9985484 DOI: 10.7759/cureus.34563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
We report an unusual case of acute septic olecranon bursitis, with probable olecranon osteomyelitis, where the only organism isolated in culture was initially considered a contaminant, Cutibacterium acnes. However, we ultimately considered it the likely causal organism when treatment for most of the other more likely organisms failed. This typically indolent organism is prevalent in pilosebaceous glands, which are scarce in the posterior elbow region. This case illustrates the often challenging empirical management of a musculoskeletal infection when the only organism isolated might be a contaminant, but successful eradication requires continued treatment as if it is the causal organism. The patient is a Caucasian 53-year-old male who presented to our clinic with a second episode of septic bursitis at the same location. Four years prior, he had septic olecranon bursitis from methicillin-sensitive Staphylococcus aureus that was treated uneventfully with one surgical debridement and a one-week course of antibiotics. In the current episode reported here, he sustained a minor abrasion. Cultures were obtained five separate times because of no growth and difficulty eradicating the infection. One culture grew C. acnes on day 21 of incubation; this long duration has been reported. The first several weeks of antibiotic treatment failed to eradicate the infection, which we ultimately attributed to inadequate treatment of C. acnes osteomyelitis. Although C. acnes has a well-known propensity for false-positive cultures as typically reported in post-operative shoulder infections, treatment for our patient's olecranon bursitis/osteomyelitis was successful only after several surgical debridements and a prolonged course of intravenous and oral antibiotics that targeted it as the presumptive causal organism. However, it was possible that C. acnes was a contaminant/superinfection, and another organism was the culprit, such as a Streptococcus or Mycobacterium species that was eradicated by the treatment regime targeted for C. acnes.
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Affiliation(s)
- John G Skedros
- Shoulder and Elbow, Utah Orthopaedic Specialists, Salt Lake City, USA.,Department of Orthopaedics, University of Utah, Salt Lake City, USA
| | - Ethan D Finlinson
- Shoulder and Elbow, Utah Orthopaedic Specialists, Salt Lake City, USA
| | - Meredith G Luczak
- Shoulder and Elbow, Utah Orthopaedic Specialists, Salt Lake City, USA
| | - John T Cronin
- Shoulder and Elbow, Utah Orthopaedic Specialists, Salt Lake City, USA
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19
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Torrens C, Pérez-Prieto D, Puig L, Prim N, Santana F, Alier A. Minimal number of cultures needed to detect Cutibacterium acnes in primary reverse shoulder arthroplasty: a prospective study. J Shoulder Elbow Surg 2023; 32:89-95. [PMID: 35961500 DOI: 10.1016/j.jse.2022.06.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/07/2022] [Accepted: 06/27/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND The objective of this study was to determine the minimum number of cultures needed to detect Cutibacterium acnes in primary reverse shoulder arthroplasties (RSAs). METHODS It is a prospective study including 160 primary RSAs. Exclusion criteria included an active infection, an invasive shoulder treatment in the last 6 months before surgery, an Arthro-SCAN or Arthro-MRI in the last 6 months before surgery, previous shoulder surgeries and revision cases. In 90 cases, 11 cultures were obtained. Another 10 cultures were obtained in the other 70 cases (culture 10 was a sterile sponge to detect false positives). To determine the minimum number of cultures needed to detect C acnes, the prevalence of C acnes contamination of the 160 patients included was determined. RESULTS There were 128 females and 32 males, with a mean age of 74 years. There were 1690 cultures obtained from the 160 primary RSA surgeries, and 132 of them turned out to be positive for C acnes. There were 42 patients with positive cultures. Twenty of them were males and 22 females. When considering the skin and the deep tissue cultures altogether, the prevalence of positive cultures for C acnes was of 26.25%. If only deep tissues cultures were considered, the prevalence of positive cultures for C acnes was of 23.13%. When considering the skin and the deep tissue cultures together, the sensitivity to detect the C acnes is 19% if only 1 culture is obtained, 31% if 2 cultures are obtained, 50% if 3 cultures are obtained, 59.5% if 4 cultures are obtained, 66.7% if 5 cultures are obtained, 73.8% if 6 cultures are obtained, 85.7% if 7 cultures are obtained, and 92.9% if 8 cultures are obtained. When considering only the deep tissue cultures, if only 1 culture is obtained, the sensitivity to detect the C acnes is 24.3%, 40.5% if 2 cultures are obtained, 54.1% if 3 cultures are obtained, 73% if 4 cultures are obtained, 89.2% if 5 cultures are obtained, and 97.3% if 6 or 7 cultures are obtained. DISCUSSION A minimum number of 8 cultures are needed to detect C acnes in skin. Moreover, a minimum of 6 cultures are needed to detect it in deep tissues when performing an RSA.
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Affiliation(s)
- Carlos Torrens
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain.
| | - Daniel Pérez-Prieto
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
| | - Lluís Puig
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
| | - Nuria Prim
- Microbiology Service, Laboratori de Referència de Catalunya, Hospital del Mar, Barcelona, Spain
| | - Fernando Santana
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
| | - Albert Alier
- Department of Orthopedics, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
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20
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Livesey MG, Bains SS, Weir TB, Kolakowski LC, Remily EA, Sax OC, Gilotra MN, Hasan SA. Does needle penetration of the shoulder joint prior to arthroscopy increase infection risk? The effect of preoperative magnetic resonance arthrogram or corticosteroid injection. J Shoulder Elbow Surg 2022; 32:e305-e310. [PMID: 36581133 DOI: 10.1016/j.jse.2022.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/26/2022] [Accepted: 11/13/2022] [Indexed: 12/28/2022]
Abstract
BACKGROUND Prior literature has associated preoperative corticosteroid shoulder injection (CSI) with infection following shoulder surgery. A recent study found an equally elevated risk of total knee arthroplasty infection with preoperative injection of either CSI or hyaluronic acid. The implication is that violation of a joint prior to surgery, even in the absence of corticosteroid, may pose an elevated risk of infection following orthopedic surgery. The aim of the present study was to determine whether violation of the shoulder joint for magnetic resonance arthrogram (MRA) poses an elevated risk of infection following shoulder arthroscopy, and to compare this risk to that introduced by preoperative CSI. METHODS A national, all-payer database was queried to identify patients undergoing shoulder arthroscopy between January 2015 and October 2020. Patients were stratified into the following groups: (1) no CSI or MRA within 6 months of surgery (n = 5000), (2) CSI within 2 weeks of surgery (n = 1055), (3) CSI between 2 and 4 weeks prior to surgery (n = 2575), (4) MRA within 2 weeks of surgery (n = 414), and (5) MRA between 2 and 4 weeks prior to surgery (n = 1138). Postoperative infection (septic shoulder or surgical site infection) was analyzed at 90 days, 1 year, and 2 years, postoperatively. Multivariable logistic regression analysis controlled for differences among groups. RESULTS MRA within 2 weeks prior to shoulder surgery was associated with an increased risk of infection at 1 year (odds ratio [OR], 2.17; P = .007), while MRA 2-4 weeks preceding surgery was not associated with an increased risk of postoperative infection at any time point. By comparison, CSI within 2 weeks prior to surgery was associated with an increased risk of postoperative infection at 90 days (OR, 1.72; P = .022), 1 year (OR, 1.65; P = .005), and 2 years (OR, 1.63; P = .002) following surgery. Similarly, CSI 2-4 weeks prior to surgery was associated with an increased risk of postoperative infection at 90 days (OR, 1.83; P < .001), 1 year (OR, 1.62; P < .001), and 2 years (OR, 1.79; P < .001). CONCLUSION Preoperative CSI within 4 weeks of shoulder arthroscopy elevates the risk of postoperative infection. Needle arthrotomy for shoulder MRA elevates the risk of infection in a more limited fashion. Avoidance of MRA within 2 weeks of shoulder arthroscopy may mitigate postoperative infection risk. Additionally, the association between preoperative CSI and postoperative infection may be more attributed to medication profile than to needle arthrotomy.
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Affiliation(s)
- Michael G Livesey
- Department of Orthopaedic Surgery, University of Maryland, Baltimore, MD, USA
| | - Sandeep S Bains
- Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
| | - Tristan B Weir
- Department of Orthopaedic Surgery, University of Maryland, Baltimore, MD, USA
| | - Logan C Kolakowski
- Department of Orthopaedic Surgery, University of Maryland, Baltimore, MD, USA
| | - Ethan A Remily
- Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
| | - Oliver C Sax
- Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
| | - Mohit N Gilotra
- Department of Orthopaedic Surgery, University of Maryland, Baltimore, MD, USA
| | - S Ashfaq Hasan
- Department of Orthopaedic Surgery, University of Maryland, Baltimore, MD, USA.
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21
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Dmitrov IA, Zagorodniy NV, Obolenskiy VN, Leval' PS, Zakharyan NG, Apresyan VS, Panin MA, Samkovich DA, Aliev RN, Grigoryan AA. Diagnosis and treatment of periprosthetic infection after hip replacement (a review). BULLETIN OF THE MEDICAL INSTITUTE "REAVIZ" (REHABILITATION, DOCTOR AND HEALTH) 2022. [DOI: 10.20340/vmi-rvz.2022.6.clin.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Introduction. The frequency of hip arthroplasty is steadily increasing throughout the world and, although this operation has become routine, the likelihood of postoperative complications reaches 4.3 % [1]. The most dangerous of them are infectious lesions in the area of the endoprosthesis and adjacent tissues. At the same time, in addition to the threat of generalization of the infectious process, there are functional disorders in the joint area and a general deterioration in the quality of life of the patient. Timely diagnosis and treatment of the infectious process and related disorders can minimize the adverse effects of infection.Target. The purpose of this review is to analyze modern methods for diagnosing and treating periprosthetic infection resulting from hip replacement.Materials and methods. The subject literature was searched using the PubMed and Google Sholar databases.Results. The main methods for diagnosing periprosthetic infection include histological and bacteriological examination of the biopsy specimen, determination of sensitivity to antibiotics, blood, and synovial fluid analysis for the content of leukocytes, IL-6, CRP, PCR diagnostics of infectious agents. Treatment consists of re-intervention and/or antibiotic therapy.Conclusion. The most optimal method for diagnosing periprosthetic infection is a bacteriological study of biopsy specimens taken intraoperatively. The preferred method of treatment is determined by the severity of the infection, the degree of involvement of tissues adjacent to the prosthesis, the comorbid background, the nature of the infectious agent, and includes repeated revision surgery.
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Affiliation(s)
| | - N. V. Zagorodniy
- RUDN University; Pirogov Russian National Research Medical University
| | - V. N. Obolenskiy
- Pirogov Russian National Research Medical University; City Clinical Hospital No. 13
| | - P. Sh. Leval'
- City Clinical Hospital No. 13; European Clinic of Traumatology and Orthopedics (ECSTO)
| | | | | | - M. A. Panin
- RUDN University; City Clinical Hospital No. 17
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22
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Sagkrioti M, Glass S, Arealis G. Evaluation of the effectiveness of skin preparation methods for the reduction of Cutibacterium acnes (formerly Propionibacterium acnes) in shoulder surgery: a systematic review. Shoulder Elbow 2022; 14:583-597. [PMID: 36479010 PMCID: PMC9720868 DOI: 10.1177/17585732211032523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/15/2021] [Indexed: 12/22/2022]
Abstract
Background Cutibacterium acnes (C. acnes) is the most common pathogen responsible for post-operative shoulder infections. The purpose of this study was to evaluate the effectiveness of skin preparation methods against C. acnes in shoulder surgery. Methods A systematic review was conducted evaluating the effectiveness of skin preparation methods in the reduction of C. acnes in patients undergoing shoulder surgery. Outcomes were assessed based on the effectiveness of the method used; side effects and cost were also analysed. Results Of the 19 included studies, 9 evaluated pre-surgical home treatments: 8 assessed benzoyl peroxide (BPO) and 6 concluded it is effective in reducing C. acnes. Nine studies assessed surgical skin preparation and concluded that Chlorhexidine gluconate (CHG) was not effective; in contrast hydrogen peroxide reduced C. acnes. Finally, one study evaluated an aseptic protocol using CHG and concluded that it was not effective. Conclusions It was demonstrated that BPO as home treatment is effective in reducing C. acnes load on skin; it rarely causes side effects and is also cost-effective. This study highlights non-effectiveness of CHG. There was some evidence that the addition of hydrogen peroxide could have a positive effect in the reduction of C. acnes skin load; however, more studies are required.
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Affiliation(s)
- Maria Sagkrioti
- Department of Infection Prevention and Control, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
| | - Stephen Glass
- Department of Microbiology, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
| | - Georgios Arealis
- Department of Trauma and Orthopaedics, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
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23
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Paziuk T, Cox RM, Gutman MJ, Rondon AJ, Nicholson T, Belden K, Namdari S. Periprosthetic joint infections of the shoulder: A 10-year retrospective analysis outlining the heterogeneity among these patients. Shoulder Elbow 2022; 14:598-605. [PMID: 36479014 PMCID: PMC9720872 DOI: 10.1177/17585732211019010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 11/15/2022]
Abstract
Background Diagnosis and treatment of shoulder periprosthetic joint infection is a difficult problem. The purpose of this study was to utilize the 2018 International Consensus Meeting definition of shoulder periprosthetic joint infection to categorize revision shoulder arthroplasty cases and determine variations in clinical presentation by presumed infection classification. Methods Retrospective review of patients undergoing revision shoulder arthroplasty at a single institution. Likelihood of periprosthetic joint infection was determined based on International Consensus Meeting scoring. All patients classified as definitive or probable periprosthetic joint infection were classified as periprosthetic joint infection. All patients classified as possible or unlikely periprosthetic joint infection were classified as aseptic. The periprosthetic joint infection cohort was subsequently divided into culture-negative, non-virulent microorganism, and virulent microorganism cohorts based on culture results. Results Four hundred and sixty cases of revision shoulder arthroplasty were reviewed. Eighty (17.4%) patients were diagnosed as definite or probable periprosthetic joint infection, of which 29 (36.3%), 39 (48.8%), and 12 (15.0%) were classified as virulent, non-virulent, or culture-negative periprosthetic joint infection, respectively. There were significant differences among periprosthetic joint infection subgroups with regard to preoperative C-reactive protein (p = 0.020), erythrocyte sedimentation rate (p = 0.051), sinus tract presence (p = 0.008), and intraoperative purulence (p < 0.001). The total International Consensus Meeting criteria scores were also significantly different between the periprosthetic joint infection cohorts (p < 0.001). Discussion While the diagnosis of shoulder periprosthetic joint infection has improved with the advent of International Consensus Meeting criteria, there remain distinct differences between periprosthetic joint infection classifications that warrant further investigation to determine the accurate diagnosis and optimal treatment.
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Affiliation(s)
- Taylor Paziuk
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ryan M Cox
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael J Gutman
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Alexander J Rondon
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Thema Nicholson
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Katherine Belden
- Department of Infectious Disease, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Surena Namdari
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
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24
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An evidence-based approach to managing unexpected positive cultures in shoulder arthroplasty. J Shoulder Elbow Surg 2022; 31:2176-2186. [PMID: 35513254 DOI: 10.1016/j.jse.2022.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/11/2022] [Accepted: 03/21/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Unexpected positive cultures (UPCs) are very commonly found during shoulder arthroplasty when surgeons send intraoperative cultures to rule out periprosthetic joint infection (PJI) without clinical or radiographic signs of infection. Cutibacterium acnes is thought to be the most common bacteria cultured in this setting; however, the implications of an unexpected positive result are neither well defined nor agreed upon within the literature. The current review evaluates the incidence of UPCs and C acnes in reverse total arthroplasty; the clinical significance, if any, of these cultures; and various prognostic factors that may affect UPC incidence or recovery following PJI. METHODS A systematic review was performed with PRISMA guidelines using PubMed, CINAHL, and Scopus databases. Inclusion criteria included studies published from January 1, 2000, to May 20, 2021, that specifically reported on UPCs, native or revision shoulder surgery, and any study that directly addressed one of our 6 proposed clinical questions. Two independent investigators initially screened 267 articles for further evaluation. Data on study design, UPC rate/speciation, UPC risk factors, and UPC outcomes were analyzed and described. RESULTS A total of 22 studies met the inclusion criteria for this study. There was a pooled rate of 27.5% (653/2373) deep UPC specimen positivity, and C acnes represented 76.4% (499/653) of these positive specimens. Inanimate specimen positivity was reported at a pooled rate of 20.1% (29/144) across 3 studies. Male patients were more likely to have a UPC; however, the significance of prior surgery, surgical approach, and type of surgery conflicted across multiple articles. Patient-reported outcomes and reoperation rates did not differ between positive-UPC and negative-UPC patients. The utilization of antibiotics and treatment regimen varied across studies; however, the reinfection rates following surgery did not statistically differ based on the inclusion of antibiotics. CONCLUSION UPCs are a frequent finding during shoulder surgery and C acnes represents the highest percentage of cultured bacteria. Various preoperative risk factors, surgical techniques, and postoperative treatment regimens did not significantly affect the incidence of UPCs as well as the clinical outcomes for UPC vs. non-UPC patients. A standardized protocol for treatment and follow-up would decrease physician uncertainty when faced with a UPC from shoulder surgery. Given the results of this review, shoulder surgeons can consider not drastically altering the postoperative clinical course in the setting of UPC with no other evidence of PJI.
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25
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Nhan DT, Gong DC, Khoo KJ, Whitson AJ, Matsen FA, Hsu JE. Culturing explants for Cutibacterium at revision shoulder arthroplasty: an analysis of explant and tissue samples at corresponding anatomic sites. J Shoulder Elbow Surg 2022; 31:2017-2022. [PMID: 35447317 DOI: 10.1016/j.jse.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 02/22/2022] [Accepted: 03/06/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Culturing of deep tissues obtained at revision arthroplasty for Cutibacterium is a key component of diagnosing a periprosthetic infection. The value of culturing explanted components has not been well described. This study sought to answer the following questions: (1) How does the culture positivity of explant cultures compare with that of deep tissue cultures? (2) How often are explant cultures positive when tissue cultures are not, and vice versa? (3) How does the bacterial density in explant cultures compare with that in tissue cultures? METHODS A total of 106 anatomic arthroplasties revised over a 7-year period were included. Explant (humeral head, humeral stem, and glenoid) and tissue (collar membrane, humeral canal tissue, and periglenoid tissue) specimens were sent for semiquantitative Cutibacterium culture. We compared culture positivity and bacterial density when cultures of an explant and tissue adjacent to the implant were both available. RESULTS Explants had positive cultures at a higher rate than adjacent tissue specimens for most anatomic sites. Of the shoulders that had Cutibacterium growth, a higher proportion of explants were culture positive when tissue samples were negative (23%-43%) than vice versa (0%-21%). The Cutibacterium density was higher in explants than in tissues. Considering only the results of tissue samples, 16% of the shoulders met our threshold for infection treatment (≥2 positive cultures); however, with the inclusion of the results for explant cultures, additional 14% of cases-a total of 30%-met the criteria for infection treatment. CONCLUSIONS In this group of patients, culturing explants in addition to tissue cultures increased the sensitivity for detecting Cutibacterium in revision shoulder arthroplasty.
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Affiliation(s)
- Derek T Nhan
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Davin C Gong
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Kevin J Khoo
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Anastasia J Whitson
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Frederick A Matsen
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Jason E Hsu
- Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, USA.
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26
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Hsu JE, Bumgarner RE, Bourassa LA, Budge MD, Duquin TR, Garrigues GE, Green A, Iannotti JP, Khazzam MS, Koh JL, Matsen FA, Namdari S, Nicholson TA, Richter SS, Sabesan VJ, Virk MS, Whitson AJ, Yian EH, Ricchetti ET. What do positive and negative Cutibacterium culture results in periprosthetic shoulder infection mean? A multi-institutional control study. J Shoulder Elbow Surg 2022; 31:1713-1720. [PMID: 35176494 DOI: 10.1016/j.jse.2022.01.127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Deep tissue culture specimens obtained at the time of revision shoulder arthroplasty are commonly positive for Cutibacterium. Clinical interpretation of positive cultures can be difficult. This was a multi-institutional study evaluating the accuracy of cultures for Cutibacterium using positive control (PC) and negative control (NC) samples. The relationship between time to culture positivity and strength of culture positivity was also studied. METHODS Eleven different institutions were each sent 12 blinded samples (10 PC and 2 NC samples). The 10 PC samples included 2 sets of 5 different dilutions of a Cutibacterium isolate from a failed total shoulder arthroplasty with a probable periprosthetic infection. At each institution, the samples were handled as if they were received from the operating room. Specimen growth, time to culture positivity, and strength of culture positivity (based on semiquantitative assessment) were reported. RESULTS A total of 110 PC samples and 22 NC samples were tested. One hundred percent of specimens at the 4 highest dilutions were positive for Cutibacterium. At the lowest dilution, 91% of samples showed positive findings. Cutibacterium grew in 14% of NC samples. Cutibacterium grew in PC samples at an average of 4.0 ± 1.3 days, and all of these samples showed growth within 7 days. The time to positivity was significantly shorter (P < .001) and the strength of positivity was significantly higher (P < .001) in true-positive cultures compared with false-positive cultures. CONCLUSIONS This multi-institutional study suggests that different institutions may report highly consistent rates of culture positivity for revision shoulder arthroplasty samples with higher bacterial loads. In contrast, with lower bacterial loads, the results are somewhat less consistent. Clinicians should consider using a shorter time to positivity and a higher strength of positivity as adjuncts in determining whether a tissue culture sample is a true positive.
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Affiliation(s)
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- ASES PJI Multicenter Research Group
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27
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Cochrane NH, Kim BI, Wu M, O'Donnell JA, Seidelman JL, Jiranek WA. Cutibacterium Positive Cultures in Total Hip Arthroplasty: Contaminant or Pathogen? J Arthroplasty 2022; 37:S642-S646. [PMID: 35660199 DOI: 10.1016/j.arth.2022.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/16/2021] [Accepted: 01/06/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Cutibacterium spp. is an emerging pathogen in total hip arthroplasty (THA) that is not well evaluated in the literature. This study reported on the presentation and management of THA complicated by positive intraoperative Cutibacterium cultures. METHODS This is a retrospective review of 27 revision THAs with positive monomicrobial intraoperative Cutibacterium cultures from 2014 to 2020 at one academic center. These patients were divided into two cohorts based on meeting Musculoskeletal Infection Society (MSIS) criteria for prosthetic joint infections (PJI). Patient demographics, preoperative labs, and hip aspirate results were collected. Procedure performed, postoperative antibiotic regimens, and repeat infections were recorded. Data were compared with univariate analysis. RESULTS Nine of the 27 patients preoperatively met MSIS criteria for PJI. Patients with positive MSIS criteria had significantly higher median synovial cell count (P = .048) and neutrophil percentage in a preoperative aspirate (P = .050). Eight patients with positive MSIS criteria received six weeks of postoperative antibiotics compared to two patients with negative criteria. Two patients with positive MSIS criteria had a postoperative infection that required further surgical intervention. Four patients with negative criteria who required further surgical intervention did not receive postoperative antibiotics after initial revision. CONCLUSION While often categorized as a contaminant, Cutibacterium is an increasingly recognized pathogen in THA. Cutibacterium can often present with normal serology, which may result in misdiagnosis as aseptic THA failure. Without the administration of postoperative antibiotics after positive cultures, there is a risk for persistent infection requiring further surgical intervention.
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Affiliation(s)
- Niall H Cochrane
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC
| | - Billy I Kim
- School of Medicine, Duke University Medical Center, Durham, NC
| | - Mark Wu
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC
| | - Jeffrey A O'Donnell
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC
| | - Jessica L Seidelman
- Department of Infectious Diseases, Duke University Medical Center, Durham, NC
| | - William A Jiranek
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC
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28
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Unterfrauner I, Wieser K, Catanzaro S, Uçkay I, Bouaicha S. Acne cream reduces the deep Cutibacterium acnes tissue load before elective open shoulder surgery: a randomized controlled pilot trial. J Shoulder Elbow Surg 2022; 31:897-905. [PMID: 35158064 DOI: 10.1016/j.jse.2022.01.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/24/2021] [Accepted: 01/03/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Cutibacterium acnes is the main pathogen in periprosthetic shoulder infections. In acne vulgaris therapy, benzoyl peroxide-miconazole nitrate cream effectively reduces the superficial C acnes burden of the skin. Its additional potential in the subcutaneous and capsular layers (eg, for prevention of future periprosthetic shoulder infections) is unknown. The aim of this study was to investigate the efficacy of a topical acne vulgaris cream (benzoyl peroxide-miconazole nitrate) to reduce subcutaneous and capsular C acnes in individuals with C acnes skin colonization undergoing open shoulder surgery. METHODS A prospective randomized pilot trial was performed, allocating 60 adult patients (1:1) to either a 7-day preoperative application of a commercial acne cream (benzoyl peroxide-miconazole nitrate) on the preoperative skin (intervention group) or no cream (control group) from November 1, 2018, to May 31, 2020. The superficial skin of the shoulder was sampled at enrollment and before incision, and deep subcutaneous and capsular shoulder samples were taken during surgery. RESULTS Sixty patients (mean age, 59 years; 55% female patients) undergoing primary open shoulder surgery (17 Latarjet procedures and 43 arthroplasties) were included in the study. At baseline, both randomized groups showed the presence of C acnes on the skin at a rate of 60% (18 of 30 patients in intervention group and 19 of 30 patients in control group, P = .79). In patients with C acnes skin colonization, the intervention resulted in a significant reduction in the overall number of intraoperative samples with positive findings compared with the control group (8 of 18 patients vs. 16 of 19 patients, P = .01), especially in capsular samples (0 of 18 patients vs. 4 of 19 patients, P = .04). CONCLUSION The topical 7-day preoperative skin application of acne cream (benzoyl peroxide-miconazole nitrate) significantly reduced the intraoperative C acnes load in 56% of the patients in the intervention group compared with 16% of the control patients.
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Affiliation(s)
- Ines Unterfrauner
- Orthopedic Department, Balgrist University Hospital, University of Zürich, Zürich, Switzerland.
| | - Karl Wieser
- Orthopedic Department, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Sabrina Catanzaro
- Unit of Clinical and Applied Research, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Ilker Uçkay
- Unit of Clinical and Applied Research, Balgrist University Hospital, University of Zürich, Zürich, Switzerland; Infectiology and Infection Control, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Samy Bouaicha
- Orthopedic Department, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
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29
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Roberts CC, Metter DF, Fox MG, Appel M, Jawetz ST, Morrison WB, Nacey N, Said N, Stensby JD, Subhas N, Tynus KM, Walker EA, Yu JS, Kransdorf MJ. ACR Appropriateness Criteria® Imaging After Shoulder Arthroplasty: 2021 Update. J Am Coll Radiol 2022; 19:S53-S66. [PMID: 35550805 DOI: 10.1016/j.jacr.2022.02.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 02/19/2022] [Indexed: 11/19/2022]
Abstract
Shoulder arthroplasty is a common orthopedic procedure with a complication rate reported to be as high as 39.8% and revision rates as high as 11%. Symptoms related to postoperative difficulties include activity-related pain, decreased range of motion, and apprehension. Some patients report immediate and persistent dissatisfaction, although others report a symptom-free postoperative period followed by increasing pain and decreasing shoulder function and mobility. Imaging plays an important role in diagnosing postoperative complications of shoulder arthroplasties. The imaging algorithm should always begin with radiographs. The selection of the next imaging modality depends on several factors, including findings on the initial imaging study, clinical suspicion of an osseous versus soft-tissue injury, and clinical suspicion of infection.The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.
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Affiliation(s)
| | | | - Michael G Fox
- Panel Chair, Musculoskeletal Division Chair and Diagnostic Radiology Program Director, Mayo Clinic Arizona, Phoenix, Arizona
| | - Marc Appel
- James J. Peters VA Medical Center, Bronx, New York; American Academy of Orthopaedic Surgeons; and liaison with AOOS
| | - Shari T Jawetz
- Director, Radiology Quality Assurance; Director, Radiology Resident and Medical Student Education; and Chief, Division of Body CT, Hospital for Special Surgery, New York, New York
| | - William B Morrison
- Director, Division of Musculoskeletal Radiology, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania; ACR education center faculty; ACR AIRP faculty; ACR CPI author
| | - Nicholas Nacey
- Fellowship Director, Imaging Center Medical Director, University of Virginia Health System, Charlottesville, Virginia
| | - Nicholas Said
- Medical Director of MRI Duke University Health System, Access Champion Department of Radiology, Director of Musculoskeletal Intervention, Duke University Medical Center, Durham, North Carolina
| | - James D Stensby
- MSK Imaging Fellowship Director, University of Missouri Health Care, Columbia, Missouri
| | - Naveen Subhas
- Vice Chair of Clinical Effectiveness and Efficiency, Imaging Institute Program Director, Musculoskeletal Radiology; and Director, Bone Mineral Densitometry, Cleveland Clinic, Cleveland, Ohio
| | - Katherine M Tynus
- Northwestern Memorial Hospital, Chicago, Illinois; American College of Physicians
| | - Eric A Walker
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania and Uniformed Services University of the Health Sciences, Bethesda, Maryland; Past President of the Penn State College of Medicine Faculty Organization, ACR local chapter PRS President Elect
| | - Joseph S Yu
- The Ohio State University Wexner Medical Center, Columbus, Ohio
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30
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Pruijn N, Heesakkers N, Kosse N, van der Pluijm M, Telgt D, Dorrestijn O. Better diagnostic value of tissue cultures obtained during mini-open and arthroscopic procedures compared with sterile punctures to identify periprosthetic shoulder infections: a retrospective cohort study. J Shoulder Elbow Surg 2022; 31:932-939. [PMID: 34801715 DOI: 10.1016/j.jse.2021.10.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/15/2021] [Accepted: 10/23/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND This study aimed to determine the sensitivity and specificity of sterile shoulder needle aspiration and cultures obtained during arthroscopic and mini-open procedures for detecting periprosthetic shoulder infections using tissue cultures from revision surgery as the gold standard. METHODS All shoulder arthroplasty patients who underwent a synovial fluid puncture between August 2012 and February 2018 were selected. In addition, arthroplasty patients with cultures obtained during arthroscopic or mini-open procedures between May 2014 and May 2021 were selected. When sterile punctures or biopsy procedures were followed by revision surgery with collection of 6 tissue cultures, patients were included in the study and efficacy measures were calculated. RESULTS Fifty-six patients were included in this study (with 57 punctures) and underwent analysis of puncture results after exclusions. Positive puncture results were found for Cutibacterium acnes, Staphylococcus aureus, Staphylococcus hominis, Actinomyces neuii, and Proteus mirabilis. These puncture cultures showed a sensitivity of 20.0% and specificity of 90.6%. From May 2014 to May 2021, 51 biopsy procedures were performed (15 arthroscopic and 36 mini-open); 37 biopsy procedures were included in this study (12 arthroscopic and 25 mini-open) for analysis after exclusions. Positive culture results were found for C acnes, Staphylococcus epidermidis, Staphylococcus saccharolyticus, and Streptococcus species. Arthroscopic biopsy cultures showed a sensitivity of 60.0% and specificity of 85.7%. For the mini-open biopsy cultures, the sensitivity and specificity were 66.7% and 85.7%, respectively. CONCLUSIONS Sterile punctures for culture have a low sensitivity and a high specificity for diagnosing periprosthetic shoulder infections. Tissue cultures obtained during mini-open and arthroscopic procedures have a higher sensitivity for detecting periprosthetic shoulder infections.
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Affiliation(s)
- Nathalie Pruijn
- Sint Maartenskliniek Research, Sint Maartenskliniek, Nijmegen, The Netherlands.
| | | | - Nienke Kosse
- Sint Maartenskliniek Research, Sint Maartenskliniek, Nijmegen, The Netherlands
| | - Marco van der Pluijm
- Department of Orthopedic Surgery, Sint Maartenskliniek, Nijmegen, The Netherlands
| | | | - Oscar Dorrestijn
- Department of Orthopedic Surgery, Sint Maartenskliniek, Nijmegen, The Netherlands
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Indolent Infection After Lumbar Interbody Fusion: An Under-recognized Cause of Pseudarthrosis, Which Can Be Successfully Treated With Anterior Revision Fusion. J Am Acad Orthop Surg Glob Res Rev 2022; 6:01979360-202203000-00005. [PMID: 35266911 PMCID: PMC8893294 DOI: 10.5435/jaaosglobal-d-21-00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/13/2022] [Indexed: 11/18/2022]
Abstract
Introduction: Methods: Results: Discussion:
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32
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Kopechek KJ, Cvetanovich GL, Everhart JS, Frantz TL, Samade R, Bishop JY, Neviaser AS. Factors Associated With Elevated Inflammatory Markers Prior to Shoulder Arthroplasty. HSS J 2022; 18:70-77. [PMID: 35087335 PMCID: PMC8753553 DOI: 10.1177/1556331621998662] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 10/09/2020] [Indexed: 02/03/2023]
Abstract
Background: Preoperative erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) ranges for several shoulder arthroplasty indications are not well understood. Purpose: We sought to compare preoperative ESR and CRP values for a variety of shoulder arthroplasty indications and evaluate risk factors for elevated preoperative ESR and CRP values. Methods: We conducted a retrospective cohort study of shoulder arthroplasty cases performed at a single academic medical institution from 2013 to 2018. Preoperative ESR and CRP values for 235 shoulder arthroplasties with various indications were recorded. Independent risk factors for elevated values (CRP > 10.0 mg/L and ESR > 30.0 mm/h) were determined via multiple variable logistic regression. Results: Patients undergoing shoulder arthroplasty for osteoarthritis had an ESR (mean ± SD) of 22.6 ± 17.8, with 29.8% of patients elevated, and a CRP of 6.5 ± 6.4, with 25.5% of patients elevated. Arthroplasty for acute fracture and prosthetic joint infection (PJI) had higher preoperative ESR and CRP values. Multivariate analysis identified several predictors of elevated ESR, including infection, acute fracture, diabetes, and female sex. It also identified predictors of elevated CRP, including infection, acute fracture, and younger age. Conclusions: Preoperative ESR and CRP values may be elevated in 25% to 30% of patients undergoing primary shoulder arthroplasty. Arthroplasty for both acute fracture and PJI, along with several other patient factors, was associated with elevated preoperative ESR and CRP. Thus, routine collection of ESR and CRP preoperatively may not be of benefit, as elevated values are common. Further study is warranted.
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Affiliation(s)
- Kyle J. Kopechek
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Gregory L. Cvetanovich
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Joshua S. Everhart
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Travis L. Frantz
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Richard Samade
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Julie Y. Bishop
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Andrew S. Neviaser
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH, USA,Andrew S. Neviaser, MD, Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA.
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Factors associated with failure of surgical revision and IV antibiotics to resolve Cutibacterium periprosthetic infection of the shoulder. INTERNATIONAL ORTHOPAEDICS 2022; 46:555-562. [PMID: 35031818 DOI: 10.1007/s00264-021-05259-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 10/30/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Cutibacterium is the most common organism causing shoulder periprosthetic infection (PJI). While most shoulder PJIs are well treated by prosthesis exchange and antibiotics, in some cases this treatment fails to resolve the infection. The factors associated with these failures have not been previously identified. The aim of this study was to identify the characteristics of patients with failure of treatment for PJI. METHODS Thirty-five patients suspected of having Cutibacterium PJI had revision arthroplasty with single-stage implant exchange followed by intravenous antibiotics. The characteristics of those with ≥ two positive cultures at revision surgery were compared to those who did not. The characteristics of those patients having a re-revision with ≥ two positive deep cultures (documented treatment failures) were compared to those who did not. RESULTS The 17 patients that had ≥ two positive cultures at their index revision were more likely to be male, to have had ream and run procedures, and to have higher loads of Cutibacterium on pre-operative cultures of their unprepared skin. The five patients that had documented treatment failure had higher loads of Cutibacterium on their skin and in deep cultures obtained at their index revision. CONCLUSION Patients harboring high loads of Cutibacterium on their unprepared skin prior to revision and high loads of Cutibacterium on deep cultures at the time of their index revision are at increased risk for failure of implant exchange and antibiotics to resolve a Cutibacterium PJI.
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Shearer AE, Wang A, Lawton M, Lachenauer C, Brodsky JR, Poe D, Kenna M, Licameli G. Pain at the Cochlear Implant Site Requiring Device Removal in Pediatric Patients. Laryngoscope 2022; 132:2044-2049. [PMID: 34981837 DOI: 10.1002/lary.29993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/04/2021] [Accepted: 12/02/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Idiopathic pain at the cochlear implant (CI) site outside of the immediate postoperative period is an uncommon occurrence but may necessitate device explantation. Our objective was to describe the clinical course for pediatric patients with CI site pain who ultimately required device explantation. STUDY DESIGN Retrospective chart review. METHODS We performed a retrospective database review of CIs performed at a tertiary referral center for pediatric cochlear implantation. We specifically evaluated pediatric patients who presented with pain at or near the CI device site and ultimately required explantation. RESULTS Fifteen patients (16 CIs) had pain at or near the CI site requiring device explantation. Cultures taken during site exploration or device explantation identified bacteria in 86% and 81% of procedures, respectively. Propionibacterium acnes and Staphylococcus non-aureus were the most commonly identified organisms. CONCLUSIONS The majority of patients with idiopathic pain in this cohort ultimately requiring CI explantation had chronic bacterial colonization. LEVEL OF EVIDENCE Level 4 (Case series) Laryngoscope, 2022.
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Affiliation(s)
- A Eliot Shearer
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Alicia Wang
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A
| | - Maranda Lawton
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A
| | - Catherine Lachenauer
- Harvard Medical School, Boston, Massachusetts, U.S.A.,Department of Infectious Disease, Boston Children's Hospital, Boston, Massachusetts, U.S.A
| | - Jacob R Brodsky
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Dennis Poe
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Margaret Kenna
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Greg Licameli
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
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Vancomycin is effective in preventing Cutibacterium acnes growth in a mimetic shoulder arthroplasty. J Shoulder Elbow Surg 2022; 31:159-164. [PMID: 34352403 DOI: 10.1016/j.jse.2021.06.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/19/2021] [Accepted: 06/28/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND Intra-incisional deposition of vancomycin powder is a strategy to limit Cutibacterium acnes infection after shoulder surgery. Unfortunately, limited research exists examining the effectiveness of vancomycin in a clinically relevant joint infection model. This basic science study investigated the efficacy of vancomycin administration as prophylaxis for C acnes growth in vitro using a mimetic shoulder arthroplasty. METHODS A new bioartificial shoulder joint mimetic implant (S-JIM) was used to investigate the effect of vancomycin powder on C acnes growth within the first 48 hours after surgery. The impact of vancomycin was assessed on a skin-derived (ATCC 11827) C acnes strain and a periprosthetic joint infection-derived strain. C acnes strains were applied to titanium alloy foil and embedded beneath multiple layers of collagen-impregnated cellulose scaffold strips containing human shoulder joint capsular fibroblasts, facilitating the development of an oxygen gradient with an anaerobic environment around the foil and inner layers. Ten milligrams of vancomycin powder was applied between the C acnes layer and the human cell-containing scaffold strips to model direct antibiotic application, and intravenous vancomycin prophylaxis was modeled by adding vancomycin in media at 5 or 20 μg/mL. After 48 hours, the C acnes inoculum layer was subcultured from each S-JIM onto agar plates to assess the formation of viable C acnes colonies. Primary human shoulder capsule cells were assessed microscopically to detect any detrimental effects of vancomycin on cellular integrity. RESULTS Agar plates inoculated with extracts from untreated S-JIMs consistently resulted in the growth of large numbers of C acnes colonies, whereas treatments with vancomycin powder or vancomycin in media at 20-μg/mL dilution effectively prevented the recovery of any C acnes colonies. The lowest vancomycin dilution tested (5 μg/mL) was insufficient to prevent the recovery of C acnes colonies. Vancomycin powder had no discernible short-term impact on shoulder capsule cell morphology, and the presence of these cells had no discernible impact on vancomycin degradation over time. CONCLUSIONS Vancomycin administration effectively prevented C acnes growth in a bioartificial S-JIM. These results support the hypothesis that intra-incisional vancomycin application may limit C acnes prosthetic joint infections.
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Akgün D, Wiethölter M, Siegert P, Danzinger V, Minkus M, Braun KF, Moroder P. The role of serum C-reactive protein in the diagnosis of periprosthetic shoulder infection. Arch Orthop Trauma Surg 2022; 142:1715-1721. [PMID: 33515325 PMCID: PMC9296386 DOI: 10.1007/s00402-021-03779-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/06/2021] [Indexed: 12/19/2022]
Abstract
INTRODUCTION There is a paucity of literature regarding serum C-reactive protein (CRP) in the evaluation of a shoulder periprosthetic joint infection (PJI). The purpose of the current study was to establish cutoff values for diagnosing shoulder PJI and evaluate the influence of the type of infecting microorganism and the classification subgroups according to last proposed International Consensus Meeting (ICM) criteria on the CRP level. MATERIALS AND METHODS A retrospective analysis of all 136 patients, who underwent septic or aseptic revision shoulder arthroplasty in our institution between January 2010 and December 2019, was performed. Shoulder PJI was defined according to the last proposed definition criteria of the ICM. Serum CRP levels were compared between infected and non-infected cases, between infection subgroups, as well as between different species of infecting microorganisms. A receiver-operating characteristic (ROC) analysis was performed to display sensitivity and specificity of serum CRP level for shoulder PJI. RESULTS A total of 52 patients (38%) were classified as infected, 18 meeting the criteria for definitive infection, 26 for probable infection and 8 for possible infection. According to the ROC curve, an optimized serum CRP threshold of 7.2 mg/l had a sensitivity of 69% and specificity of 74% (area under curve = 0.72). Patients with definitive infection group demonstrated significantly higher median serum CRP levels (24.3 mg/l), when compared to probable, possible infection groups and PJI unlikely group (8 mg/l, 8.3 mg/l, 3.6 mg/l, respectively, p < 0.05). The most common isolated microorganism was Cutibacterium acnes in 25 patients (48%) followed by coagulase-negative staphylococci (CNS) in 20 patients (39%). Patients with a PJI caused by high-virulent microorganisms had a significantly higher median serum CRP level compared to patients with PJI caused by low-virulent microorganisms (48 mg/l vs. 11.3 mg/l, p = 0.04). CONCLUSIONS Serum CRP showed a low sensitivity and specificity for the diagnosis of shoulder PJI, even applying cutoffs optimized by receiver-operating curve analysis. Low-virulent microorganisms and patients with probable and possible infections are associated with lower CRP levels compared to patients with definitive infection and infections caused by high-virulent microorganisms. LEVEL OF EVIDENCE Diagnostic Level III.
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Affiliation(s)
- Doruk Akgün
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Mats Wiethölter
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Paul Siegert
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Victor Danzinger
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Marvin Minkus
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Karl Friedrich Braun
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Philipp Moroder
- Department for Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charité–University Medicine Berlin, Corporate Member of Freie Universität Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
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Schiffman CJ, Hsu JE, Khoo KJ, Whitson A, Yao JJ, Wu JC, Matsen FA. Association Between Serum Testosterone Levels and Cutibacterium Skin Load in Patients Undergoing Elective Shoulder Arthroplasty: A Cohort Study. JB JS Open Access 2021; 6:JBJSOA-D-21-00030. [PMID: 34901690 PMCID: PMC8654446 DOI: 10.2106/jbjs.oa.21.00030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cutibacterium periprosthetic joint infections are important complications of shoulder arthroplasty. Although it is known that these infections are more common among men and that they are more common in patients with high levels of Cutibacterium on the skin, the possible relationship between serum testosterone levels and skin Cutibacterium levels has not been investigated.
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Affiliation(s)
- Corey J Schiffman
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
| | - Jason E Hsu
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
| | - Kevin J Khoo
- University of Washington School of Medicine, Seattle, Washington
| | - Anastasia Whitson
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
| | - Jie J Yao
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
| | - John C Wu
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
| | - Frederick A Matsen
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
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Rondon AJ, Paziuk T, Gutman MJ, Williams GR, Namdari S. Spacers for life: high mortality rate associated with definitive treatment of shoulder periprosthetic infection with permanent antibiotic spacer. J Shoulder Elbow Surg 2021; 30:e732-e740. [PMID: 34087272 DOI: 10.1016/j.jse.2021.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/03/2021] [Accepted: 05/08/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND Periprosthetic joint infection following shoulder arthroplasty represents a challenging problem for orthopedic surgeons. Although recent studies have supported 2-stage exchanges, this treatment choice may not be appropriate for all patients. Definitive antibiotic spacer placement represents one treatment strategy with limited reported outcomes in the literature. The purpose of this study was to investigate the mortality rate and functional outcomes associated with definitive spacer placement. METHODS A retrospective chart review identified 17 patients who were treated with definitive antibiotic spacer placement (18 spacers) and were followed up for a minimum of 2 years after surgery. The mortality rate over the study period was determined. Demographic information, clinical course, patient-reported outcomes (American Shoulder and Elbow Surgeons score, Single Assessment Numeric Evaluation score, and Veterans RAND 12 [VR-12] score), infection parameters as defined by International Consensus Meeting criteria, radiographic evaluation findings, and rotator cuff integrity at the time of spacer placement were collected. RESULTS Seventeen patients underwent treatment with retained antibiotic spacers at a mean age of 62.4 years (range, 50-73 years). Ten patients were women, and the mean body mass index was 30.5 (range, 22.9-39.9). Spacer placement occurred at a mean of 6.1 years (range, 0.48-14.9 years) following index arthroplasty. Five patients required spacer exchange. The most common organisms were Cutibacterium acnes (6) and methicillin-sensitive Staphylococcus aureus (6); in addition, methicillin-resistant S aureus (2), coagulase-negative Staphylococcus (2), Serratia marcescens (1), gram-positive cocci (1), Enterobacter faecalis (1), Enterobacter cloacae (1), diphtheroids (1), and an infection with negative culture findings (1) were observed. The mortality rate was 52.9% (9 of 17 patients). Among the 8 surviving patients, the mean American Shoulder and Elbow Surgeons score was 33.9 (range, 13.3-80.0), the mean Single Assessment Numeric Evaluation score was 35.6 (range, 0.0-80.0), the mean VR-12 mental score was 57.2 (range, 36.6-66.9), and the mean VR-12 physical score was 37.1 (range, 21.7-64.0) at a mean of 4.7 years (range, 2.0-8.8 years). CONCLUSION Definitive antibiotic spacer placement is an acceptable method to treat infection in medically frail patients who have a high mortality risk. Spacer exchange may be necessary because of persistent infection, and functional results are poor.
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Affiliation(s)
| | - Taylor Paziuk
- Rothman Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael J Gutman
- Rothman Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Gerald R Williams
- Rothman Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Surena Namdari
- Rothman Institute, Thomas Jefferson University, Philadelphia, PA, USA.
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Two-Stage Exchange Arthroplasty for Periprosthetic Shoulder Infection Is Associated with High Rate of Failure to Reimplant and Mortality. J Clin Med 2021; 10:jcm10215186. [PMID: 34768706 PMCID: PMC8584704 DOI: 10.3390/jcm10215186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Patients with a periprosthetic joint infection (PJI) of the shoulder, who fail to undergo reimplantation in an attempted two-stage exchange seem to be neglected in the current literature. The aim of this study was to assess the clinical course of patients after the first stage in the process of an attempted two-stage exchange for shoulder PJI. Methods: After a retrospective review of our institutional database between 2008 and 2018, 49 patients, who were treated with an intended two-stage exchange for shoulder PJI, were identified. Patients’ demographics, laboratory and health status parameters, along with records of clinical outcome were collected. The primary outcome measurements analyzed were infection eradication, successful reimplantation, and patient survival. Results: Reimplantation was completed in only 35 (71%) of 49 cases and eradication of infection was achieved in 85.7% of patients with successful reimplantation after a mean follow-up duration of 5.1 years (1.1 to 10.2 years). Reasons for failure to reimplant were premature death in 36%, high general morbidity in 29%, satisfaction with the current status in 21%, or severe infection with poor bone and soft tissues in 14% of the patients. Of the 14 cases without reimplantation, eradication rate of infection was 57% after a mean follow-up of 5 years (2.6 to 11 years). The overall mortality rate of the entire cohort was 25% at the latest follow-up and 10% within ninety days after implant removal. Patients who deceased or did not undergo reimplantation during the follow-up were significantly older and had a significantly higher Charlson comorbidity index (CCI). Conclusions: While the two-stage exchange arthroplasty can lead to high rates of infection eradication, a considerable subset of patients never undergoes the second stage for a variety of reasons. Shoulder PJI and its treatment are associated with a high risk of mortality, especially in patients with older age and higher CCI.
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Ong N, Zailan I, Tandon A. Imaging update in arthroplasty. J Clin Orthop Trauma 2021; 23:101649. [PMID: 34777990 PMCID: PMC8577440 DOI: 10.1016/j.jcot.2021.101649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 11/20/2022] Open
Abstract
Imaging of metal implants has historically been difficult, regardless of the applied modality. The number of primary arthroplasties is increasing over the years. With it, we expect the number of symptomatic complications to increase as well. Acquiring accurate imaging for diagnosis and treatment planning for these cases is of paramount importance. Significant advancements have been made to reduce artifacts, leading to better imaging representation of arthroplasty. This review article would give a background on the current ways of imaging arthroplasty and metal implants, covering recent advances in imaging techniques.
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Affiliation(s)
| | | | - Ankit Tandon
- Tan Tock Seng Hospital, Singapore
- Corresponding author.
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Ponraj DS, Falstie-Jensen T, Jørgensen NP, Ravn C, Brüggemann H, Lange J. Diagnosis of orthopaedic-implant-associated infections caused by slow-growing Gram-positive anaerobic bacteria - a clinical perspective. J Bone Jt Infect 2021; 6:367-378. [PMID: 34660180 PMCID: PMC8515996 DOI: 10.5194/jbji-6-367-2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/13/2021] [Indexed: 12/21/2022] Open
Abstract
Slow-growing Gram-positive anaerobic bacteria (SGAB) such as
Cutibacterium acnes are increasingly recognized as causative agents of implant-associated infections (IAIs) in orthopaedic surgeries. SGAB IAIs are difficult to diagnose because of their non-specific clinical and laboratory findings as well as the fastidious growth conditions required by these bacteria. A high degree of clinical suspicion and awareness of the various available diagnostic methods is therefore important. This review gives an overview of the current knowledge regarding SGAB IAI, providing details about clinical features and available diagnostic methodologies. In recent years, new methods for the diagnosis of IAI were developed, but there is limited knowledge about their usefulness in SGAB IAI. Further studies are required to determine the ideal diagnostic methodology to identify these infections so that they are not overlooked and mistakenly classified as aseptic failure.
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Affiliation(s)
| | - Thomas Falstie-Jensen
- Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus, 8200, Denmark
| | | | - Christen Ravn
- Department of Orthopaedic Surgery, Lillebaelt Hospital, Kolding, 6000, Denmark
| | | | - Jeppe Lange
- Department of Clinical Medicine, Aarhus University, Aarhus, 8000, Denmark.,Department of Orthopaedic Surgery, Horsens Regional Hospital, Horsens, 8700, Denmark
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Jauregui JJ, Tran A, Kaveeshwar S, Nadarajah V, Chaudhri MW, Henn RF, Gilotra MN, Hasan SA. Diagnosing a periprosthetic shoulder infection: A systematic review. J Orthop 2021; 26:58-66. [PMID: 34305349 DOI: 10.1016/j.jor.2021.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 07/11/2021] [Indexed: 01/16/2023] Open
Abstract
Introduction The aim of this study was to systematically review the literature regarding accurate shoulder prosthetic joint infection (PJI) diagnosis. Methods Using PRISMA guidelines, we analyzed 25 studies reporting on 5535 patients and 646 infections. Results Cutibacterium acnes (C. acnes) cultures were positive in 60% of patients. Serum markers WBC, CRP, ESR, and IL-6 appear to lack diagnostic reliability. Synovial IL-6 and alpha-defensin may be more accurate in detecting infections. Conclusion Synovial IL-6 and alpha-defensin appear to have greater utility than serum markers. These may be incorporated into new criteria to accurately diagnose shoulder PJI. Level of evidence IV.
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Affiliation(s)
- Julio J Jauregui
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Andrew Tran
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Samir Kaveeshwar
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vidushan Nadarajah
- Department of Orthopaedic Surgery, SUNY Downstate Medical Center, Brooklyn, NY, USA
| | - Moiuz W Chaudhri
- Department of Orthopaedic Surgery, SUNY Downstate Medical Center, Brooklyn, NY, USA
| | - R Frank Henn
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Mohit N Gilotra
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - S Ashfaq Hasan
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
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Zmistowski B, Chang M, Shahi A, Nicholson T, Abboud J, Lazarus M, Williams G, Parvizi J, Namdari S. Is D-dimer a Reliable Serum Marker for Shoulder Periprosthetic Joint Infection? Clin Orthop Relat Res 2021; 479:1447-1454. [PMID: 33929986 PMCID: PMC8208387 DOI: 10.1097/corr.0000000000001774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 03/15/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND The diagnosis of periprosthetic shoulder infection continues to be difficult to make with confidence. Serum D-dimer has proven to be effective as a screening tool for periprosthetic joint infection in other major joints; however, it has yet to be evaluated for use in periprosthetic shoulder infection. QUESTIONS/PURPOSES (1) Is D-dimer elevated in patients with probable or definite periprosthetic shoulder infections? (2) What is the diagnostic accuracy of D-dimer for periprosthetic shoulder infections? (3) What are the diagnostic accuracies of serum tests (erythrocyte sedimentation rate [ESR], C-reactive protein [CRP], and D-dimer), singly and in combination? METHODS Between March 2016 and March 2020, 94 patients undergoing revision total shoulder arthroplasty (anatomic or reverse) at a single institution had preoperative serum testing with CRP, ESR, and D-dimer. These 94 patients were a subset of 189 revision shoulder arthroplasties performed at this institution during the study period who met inclusion criteria and consented to participate. Included patients had a mean ± SD age of 69 ± 8 years, and 56% (53 of 94) were men. Patient records were reviewed to classify patients as definitely having infection, probably having infection, possibly having infection, or unlikely to have an infection, according to the International Consensus Meeting (ICM) definition of periprosthetic shoulder infection. Statistical analyses, including a receiver operating characteristic curve analysis, were performed to quantify the diagnostic value of D-dimer for periprosthetic shoulder infection. Based on the ICM definition, 4% (4 of 94), 15% (14 of 94), 14% (13 of 94), and 67% (63 of 94) of patients had definite, probable, possible, or unlikely periprosthetic shoulder infections. RESULTS D-dimer was elevated in patients with definite or probable infections (median [range] 661 ng/mL [150 to 8205]) compared with those with possible infections or those who were unlikely to have an infection (263 ng/mL [150 to 3060]; median difference 143 ng/mL [95% CI 40 to 503]; p = 0.01). In the receiver operating characteristic curve analysis, D-dimer had an area under the curve of 0.71 (0.50-0.92), demonstrating weak diagnostic value. A D-dimer level of 598 ng/mL provided a sensitivity and specificity of 61% (95% CI 36% to 82%) and 74% (95% CI 62% to 83%), respectively, for diagnosing a definite or probable infection according to the ICM definitions. The specificity of detecting periprosthetic joint infection (88% [95% CI 79% to 94%]) was high when three positive serum markers (ESR, CRP, and D-dimer) were required, at the expense of sensitivity (28% [95% CI 10% to 53%]). CONCLUSION In periprosthetic shoulder infection, D-dimer is elevated. However, similar to other serum tests, it has limited diagnostic utility in identifying patients with periprosthetic shoulder infection. Further work is needed to understand the process by which D-dimer is associated with active infection. LEVEL OF EVIDENCE Level III, diagnostic study.
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Affiliation(s)
- Benjamin Zmistowski
- Department of Orthopaedic Surgery, Thomas Jefferson
University Hospital, Philadelphia, PA, USA
| | - Michael Chang
- Department of Orthopaedic Surgery, Thomas Jefferson
University Hospital, Philadelphia, PA, USA
| | - Alisina Shahi
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
| | - Thema Nicholson
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
| | - Joseph Abboud
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
| | - Mark Lazarus
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
| | - Gerald Williams
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
| | - Javad Parvizi
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
| | - Surena Namdari
- Department of Orthopaedic Surgery, the Rothman
Institute, Thomas Jefferson University Hospital, Philadelphia, PA,
USA
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Wright-Chisem J, Apostolakos JM, Dines JS, Dines DM, Gulotta LV, Taylor SA, Werner BC. The impact of prior ipsilateral arthroscopy on infection rates after shoulder arthroplasty. J Shoulder Elbow Surg 2021; 30:1596-1602. [PMID: 33069904 DOI: 10.1016/j.jse.2020.09.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/08/2020] [Accepted: 09/21/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Patients frequently undergo interventions before shoulder arthroplasty, including injections and arthroscopy. Although the potential impact of injections on postoperative outcomes such as infection has been well studied, it is less clear whether prior arthroscopy has an impact on infection rates after shoulder arthroplasty. The purpose of this study was to determine whether prior ipsilateral shoulder arthroscopy is associated with an increased risk of postoperative infection after shoulder arthroplasty. METHODS Patients who underwent shoulder arthroplasty, including hemiarthroplasty, total shoulder arthroplasty, or reverse shoulder arthroplasty with a minimum of 1-year preoperative database exposure, were queried using Current Procedural Terminology codes from 2 large insurance databases, including both private-payer (Humana, 2008-2017) and Medicare (2006-2014) data. Patients with procedures for infection, fractures, or without laterality data were excluded. Those who underwent ipsilateral shoulder arthroscopy within 2 years before their arthroplasty were identified and compared with controls who did not undergo prior arthroscopy. Each database was analyzed separately. Periprosthetic infection within 1 year after arthroplasty was queried for each group and compared using a logistic regression analysis with control for demographic and comorbidity confounders. RESULTS A total of 9362 Medicare patients and 17,716 private-payer patients were included in the study. Of these, 486 (5.2%) Medicare patients and 685 (3.9%) private-payer patients underwent prior arthroscopy. In the Medicare database, prior arthroscopy was also associated with a postarthroplasty infection rate of 3.9% as compared with 1.9% in the control group (odds ratio: 1.96, 95% confidence interval: 1.20-3.22, P = .003). Similarly, in the private insurance cohort, prior shoulder arthroscopy was associated with a postarthroplasty infection rate of 2.9% as compared with 1.4% in the control group (odds ratio: 1.85, 95% confidence interval: 1.13-3.03, P = .005). CONCLUSION Shoulder arthroscopy performed within 2 years before shoulder arthroplasty is associated with a higher infection rate in the first year after shoulder arthroplasty.
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Affiliation(s)
- Joshua Wright-Chisem
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - John M Apostolakos
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Joshua S Dines
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - David M Dines
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Lawrence V Gulotta
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Samuel A Taylor
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Brian C Werner
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA.
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What is the clinical impact of positive cultures at the time of primary total shoulder arthroplasty? J Shoulder Elbow Surg 2021; 30:1324-1328. [PMID: 32920106 DOI: 10.1016/j.jse.2020.08.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/11/2020] [Accepted: 08/17/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Cultures taken at the time of primary shoulder arthroplasty are commonly positive for Cutibacterium acnes. Despite our limited understanding of the clinical implication of deep tissue inoculation from dermal colonization, significant efforts have been made to decolonize the shoulder prior to surgery. The purpose of this study is to determine differences in clinical outcomes based on culture positivity at the time of primary shoulder arthroplasty. METHODS A series of 134 patients who underwent primary anatomic or reverse total shoulder arthroplasty and had intraoperative cultures obtained via a standard protocol were included. In each case, 5 tissue samples were collected and processed in a single laboratory for culture on aerobic and anaerobic media for 13 days. Minimum 2-year functional outcomes scores (American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form [ASES] and Single Assessment Numeric Evaluation [SANE]) and reoperation data were analyzed. RESULTS Forty-two (31.3%) patients had positive cultures (30 C acnes and 21 with at least 2 positive cultures) at the time of surgery. There was no statistically significant difference in postoperative functional outcome scores (ASES: 82.5 vs. 81.9; P = .89, SANE: 79.5 vs. 82.1; P = .54) between culture-positive and culture-negative cohorts. There were no cases of infection. Two patients (4.8%; 2/42) with positive cultures required reoperation compared with 4 patients (5.6%; 4/71) without positive cultures. CONCLUSION The apparent colonization by nonvirulent organisms in patients undergoing primary shoulder arthroplasty does not appear to have a clinically significant effect on functional outcomes or need for repeat surgery in the short term.
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Falstie-Jensen T, Lange J, Daugaard H, Sørensen AKB, Ovesen J, Søballe K. Unexpected positive cultures after revision shoulder arthroplasty: does it affect outcome? J Shoulder Elbow Surg 2021; 30:1299-1308. [PMID: 33548396 DOI: 10.1016/j.jse.2020.12.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 12/07/2020] [Accepted: 12/17/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Several studies have confirmed a high rate of unexpected positive cultures (UPCs) after presumably aseptic revisions of shoulder arthroplasties; however, the impact on the outcome is still unclear. The purpose of this prospective study is to compare the patient-reported outcomes of standard revisions with and without the emergence of UPCs. METHODS During a 3-year period, we included all patients who were revised for reasons other than suspicion of infection from 2 orthopedic centers. Five biopsies were obtained from every revision, and only cultures with the same bacteria in at least 3 biopsy specimens were classified as UPCs. All patients were assessed using the Oxford Shoulder Score (OSS) and range of motion preoperatively and after at least a 2-year follow-up. RESULTS In this study, 124 patients were included, with a median follow-up of 29 months (range 29-32), and UPCs emerged after 27 revisions (22%), with Cutibacterium acnes accounting for 67% (18/27). At baseline, the OSS was 22 in both the culture-negative and UPC groups (P = .46). Then, at follow-up, the OSS was 37 in the culture-negative group and 35 in the UPC group (P = .91). The forward elevation increased significantly by 44° and 41°, respectively, in the 2 groups, but no statistically significant difference between the culture-negative group and the UPC group was found (P = .66). In contrast, the external rotation was unchanged after the revision, and again, no difference in the change between the culture-negative and UPC groups (P = .54) was observed. Subgroup analyses stratified by different implant designs revealed equal patterns with no statistical differences in outcome. CONCLUSION We did not find a difference in outcome after a presumed aseptic revision regardless of the emergence of UPCs. Similarly, we could not demonstrate that patients with UPCs presented with poorer function at baseline compared with culture-negative patients. The clinical relevance of UPCs thus requires further evaluation, especially in the case of C acnes as a potential pathogenic versus a merely colonizing microbe.
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Affiliation(s)
| | - Jeppe Lange
- Orthopedic Department, Horsens Regional Hospital, Horsens, Denmark; Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik Daugaard
- Orthopedic Department, Herlev-Gentofte Hospital, Herlev, Denmark
| | | | - Janne Ovesen
- Orthopedic Department, Aarhus University Hospital, Aarhus, Denmark
| | - Kjeld Søballe
- Orthopedic Department, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
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Brüggemann H, Salar-Vidal L, Gollnick HPM, Lood R. A Janus-Faced Bacterium: Host-Beneficial and -Detrimental Roles of Cutibacterium acnes. Front Microbiol 2021; 12:673845. [PMID: 34135880 PMCID: PMC8200545 DOI: 10.3389/fmicb.2021.673845] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 04/29/2021] [Indexed: 12/18/2022] Open
Abstract
The bacterial species Cutibacterium acnes (formerly known as Propionibacterium acnes) is tightly associated with humans. It is the dominant bacterium in sebaceous regions of the human skin, where it preferentially colonizes the pilosebaceous unit. Multiple strains of C. acnes that belong to phylogenetically distinct types can co-exist. In this review we summarize and discuss the current knowledge of C. acnes regarding bacterial properties and traits that allow host colonization and play major roles in host-bacterium interactions and also regarding the host responses that C. acnes can trigger. These responses can have beneficial or detrimental consequences for the host. In the first part of the review, we highlight and critically review disease associations of C. acnes, in particular acne vulgaris, implant-associated infections and native infections. Here, we also analyse the current evidence for a direct or indirect role of a C. acnes-related dysbiosis in disease development or progression, i.e., reduced C. acnes strain diversity and/or the predominance of a certain phylotype. In the second part of the review, we highlight historical and recent findings demonstrating beneficial aspects of colonization by C. acnes such as colonization resistance, immune system interactions, and oxidant protection, and discuss the molecular mechanisms behind these effects. This new insight led to efforts in skin microbiota manipulation, such as the use of C. acnes strains as probiotic options to treat skin disorders.
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Affiliation(s)
| | - Llanos Salar-Vidal
- Department of Clinical Microbiology, Fundacion Jimenez Diaz University Hospital, Madrid, Spain
| | - Harald P. M. Gollnick
- Department of Dermatology and Venerology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Rolf Lood
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
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Vilchez HH, Escudero-Sanchez R, Fernandez-Sampedro M, Murillo O, Auñón Á, Rodríguez-Pardo D, Jover-Sáenz A, del Toro MD, Rico A, Falgueras L, Praena-Segovia J, Guío L, Iribarren JA, Lora-Tamayo J, Benito N, Morata L, Ramirez A, Riera M. Prosthetic Shoulder Joint Infection by Cutibacterium acnes: Does Rifampin Improve Prognosis? A Retrospective, Multicenter, Observational Study. Antibiotics (Basel) 2021; 10:antibiotics10050475. [PMID: 33919103 PMCID: PMC8143127 DOI: 10.3390/antibiotics10050475] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/13/2021] [Accepted: 04/19/2021] [Indexed: 02/07/2023] Open
Abstract
This retrospective, multicenter observational study aimed to describe the outcomes of surgical and medical treatment of C. acnes-related prosthetic joint infection (PJI) and the potential benefit of rifampin-based therapies. Patients with C. acnes-related PJI who were diagnosed and treated between January 2003 and December 2016 were included. We analyzed 44 patients with C. acnes-related PJI (median age, 67.5 years (IQR, 57.3-75.8)); 75% were men. The majority (61.4%) had late chronic infection according to the Tsukayama classification. All patients received surgical treatment, and most antibiotic regimens (43.2%) included β-lactam. Thirty-four patients (87.17%) were cured; five showed relapse. The final outcome (cure vs. relapse) showed a nonsignificant trend toward higher failure frequency among patients with previous prosthesis (OR: 6.89; 95% CI: 0.80-58.90) or prior surgery and infection (OR: 10.67; 95% IC: 1.08-105.28) in the same joint. Patients treated with clindamycin alone had a higher recurrence rate (40.0% vs. 8.8%). Rifampin treatment did not decrease recurrence in patients treated with β-lactams. Prior prosthesis, surgery, or infection in the same joint might be related to recurrence, and rifampin-based combinations do not seem to improve prognosis. Debridement and implant retention appear a safe option for surgical treatment of early PJI.
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Affiliation(s)
- Helem H. Vilchez
- Infectious Diseases Unit, Internal Medicine Department, Hospital Universitari Son Espases, Fundació Institut d’Investigació Sanitària Illes Balears (IdISBa), 07120 Palma de Mallorca, Spain;
- Correspondence: ; Tel.: +34-653419331
| | - Rosa Escudero-Sanchez
- Infectious Diseases Department, Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain;
| | - Marta Fernandez-Sampedro
- Infectious Diseases Unit, Department of Medicine, Hospital Universitario Marqués de Valdecilla-IDIVAL, 39008 Cantabria, Spain;
| | - Oscar Murillo
- Infectious Diseases Department, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain;
| | - Álvaro Auñón
- Bone and Joint Infection Unit, Department of Orthopaedic Surgery, IIS-Fundación Jiménez Díaz, 28040 Madrid, Spain;
| | - Dolors Rodríguez-Pardo
- Infectious Diseases Department, Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain;
| | - Alfredo Jover-Sáenz
- Unit of Nosocomial Infection, Hospital Universitari Arnau de Vilanova, 25198 Lleida, Spain;
| | - Mª Dolores del Toro
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen Macarena CSIC, Instituto de Biomedicina de Sevilla (IBiS), Universidad de Sevilla, 41009 Sevilla, Spain;
| | - Alicia Rico
- Infectious Diseases Unit and Clinical Microbiology, Hospital Universitario La Paz, 28046 Madrid, Spain;
| | - Luis Falgueras
- Infectious Diseases Department, Corporació Sanitària Parc Taulí, 08208 Barcelona, Spain;
| | - Julia Praena-Segovia
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, University Hospital Virgen del Rocio, 41013 Sevilla, Spain;
| | - Laura Guío
- Infectious Diseases Department, Hospital Universitario Cruces, 48903 Vizcaya, Spain;
| | - José A. Iribarren
- Infectious Diseases Department, Hospital Universitario Donostia, Instituto BioDonostia, 20014 San Sebastián, Spain;
| | - Jaime Lora-Tamayo
- Infectious Diseases Unit, Internal Medicine Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Hospital 12 de Octubre “i + 12”, 28041 Madrid, Spain;
| | - Natividad Benito
- Infectious Diseases Unit, Hospital de la Santa Creu i Sant Pau-Institut d’Investigació Biomèdica Sant Pau, Departament of Medicine, Universitat Autònoma de Barcelona, 08041 Barcelona, Spain;
| | - Laura Morata
- Department of Infectious Diseases, Hospital Clínic of Barcelona, IDIBAPS, University of Barcelona, 08036 Barcelona, Spain;
| | - Antonio Ramirez
- Microbiologic Department, Hospital Universitari Son Espases, 07120 Palma de Mallorca, Spain;
| | - Melchor Riera
- Infectious Diseases Unit, Internal Medicine Department, Hospital Universitari Son Espases, Fundació Institut d’Investigació Sanitària Illes Balears (IdISBa), 07120 Palma de Mallorca, Spain;
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Bauer S, Dietz B, Trampuz A, Marchetti O. Humeral periosteal spur sign with osteolysis as an early radiographic indicator of low-grade Cutibacterium acnes prosthetic shoulder infection. BMJ Case Rep 2021; 14:14/3/e239020. [PMID: 33766962 PMCID: PMC8006776 DOI: 10.1136/bcr-2020-239020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The early diagnosis of low-grade Cutibacterium acnes prosthetic shoulder joint infection is challenging due to the lack of clinical and laboratory signs. Patients present with atypical symptoms such as stiffness or failure to improve shoulder function. The diagnosis is often delayed with impact on long-term outcomes. We present the case of an 82-year-old man with a surgical site erythema occurring 7 weeks after reverse shoulder arthroplasty associated with a light raise of C reactive protein (20 mg/L). At 9 weeks, radiographs revealed a 'periosteal spur sign' (humeral calcar) and localised adjacent osteolysis. Open surgery showed morphological signs of infection confirmed by growth of C acnes in eight cultures. A 'periosteal spur sign' is a useful early radiographic indicator of low-grade prosthetic joint infection usually occurring with some delay after clinical symptoms. A high clinical index of suspicion is needed to proceed with biopsies and to initiate combined operative and antibacterial treatment.
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Affiliation(s)
- Stefan Bauer
- Department of Orthopaedics and Trauma Surgery, EHC, Morges, Vaud, Switzerland
| | - Benjamin Dietz
- Department of Orthopaedics, Trauma and Spine Surgery, St Josefs Hospital, Wiesbaden, Hessen, Germany
| | - Andrej Trampuz
- Charité - Universitätsmedizin, Center for Musculoskeletal Surgery (CMSC), Berlin, Germany
| | - Oscar Marchetti
- Department of Medicine, Infectious Diseases, EHC, Morges, Vaud, Switzerland
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McCarroll TR, Jaggers RR, Cagle RA, Davis TE, Easton BL, Curless CT, Misamore GW. The incidence and incubation period of false-positive culture results in shoulder surgery. J Shoulder Elbow Surg 2021; 30:538-543. [PMID: 32650078 DOI: 10.1016/j.jse.2020.06.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/18/2020] [Accepted: 06/28/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Postoperative shoulder infection is a significant complication requiring timely identification and treatment. Indolent infections such as those involving Cutibacterium acnes (formerly Propionibacterium acnes) provide a diagnostic dilemma as they present differently, without the acute symptoms associated with most postoperative bone and joint infections. Furthermore, Cacnes is thought to be a common contaminant isolated from intraoperative cultures. With no consensus algorithm, long-held cultures play a major role in guiding management decisions in potential postoperative shoulder infection. Our study sought to determine the incidence of positive culture results in both open and arthroscopic procedures in noninfected patients, as well as to clarify whether an increase in the incubation time frame leads to an increased rate of culture growth. METHODS One hundred patients were prospectively enrolled into either the open or arthroscopic procedure group. Patients with abnormal inflammatory laboratory findings, a history of shoulder surgery, or corticosteroid injection within 6 months of surgery were excluded from the study. Three cultures were obtained for each patient: superficial tissue culture, tissue culture, and "sterile" control swab. Cultures were held for 28 days and checked at regular intervals. All patients were followed up clinically for 6 months to ensure no signs of postoperative infection occurred. RESULTS Ultimately, 95 patients were included in the final analysis. The false-positive rate was 17.0% in those who underwent open shoulder surgery and 10.4% in those who underwent arthroscopic shoulder surgery. The incidence of positive Cacnes culture results was 6.4% in the open group, whereas Cacnes was not isolated in the arthroscopic group. All positive bacterial culture results were reported within 7 days of collection. One culture result was positive for mold at 26 days. CONCLUSION A relatively high false-positive culture rate occurred in both open and arthroscopic shoulder surgery. Cacnes was the most commonly identified bacterium in cultures in the open surgery group. Knowledge of one's institutional false-positive culture rate could be important in avoiding potentially inappropriate treatment. Additionally, we found that holding cultures longer than 14 days did not lead to an increased rate of false-positive culture results.
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Affiliation(s)
| | | | | | - Thomas E Davis
- Indiana University School of Medicine, Indianapolis, IN, USA
| | - Brenda L Easton
- Methodist Sports Medicine Research and Education Foundation, Indianapolis, IN, USA
| | - Chris T Curless
- Methodist Sports Medicine Research and Education Foundation, Indianapolis, IN, USA
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