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Dasari SP, Kanumuri SD, Yang J, Manner PA, Fernando ND, Hernandez NM. Extended Prophylactic Antibiotics for Primary and Aseptic Revision Total Joint Arthroplasty: A Meta-Analysis. J Arthroplasty 2024:S0883-5403(24)00014-7. [PMID: 38237874 DOI: 10.1016/j.arth.2024.01.014] [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: 09/05/2023] [Revised: 12/24/2023] [Accepted: 01/07/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND There is growing interest in extended antibiotic prophylaxis (EAP) following total joint arthroplasty (TJA); however, the benefit of EAP remains controversial. For this investigation, both oral and intravenous antibiotic protocols were included in the EAP group. METHODS The Cochrane Database of Systematic Reviews, Cochrane Register of Controlled Trials, PubMed, MEDLINE, Web of Science, Ovid Embase, Elton B. Stephens CO, and Cumulative Index to Nursing and Allied Health Literature were queried for literature comparing outcomes of primary and aseptic revision total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients who were treated with either ≤24 hours of postoperative antibiotic prophylaxis (standard of care [SoC]) or >24 hours of EAP. The primary outcome was periprosthetic joint infection (PJI). A pooled relative-risk random-effects Mantel-Haenszel model was implemented to compare cohorts. RESULTS There were 18 studies with a total of 19,153 patients included. There was considerable variation in antibiotic prophylaxis protocols with first-generation cephalosporins being the most commonly implemented antibiotic for both groups. Patients treated with EAP were 35% less likely to develop PJI relative to the SoC (P = .0004). When examining primary TJA, patients treated with EAP were 39% and 40% less likely to develop a PJI for TJA (P = .0008) and THA (P = .02), respectively. There was no significant difference for primary TKA (P = .17). When examining aseptic revision TJA, EAP led to a 36% and 47% reduction in the probability of a PJI for aseptic revision TJA (P = .007) and aseptic revision TKA (P = .008), respectively; there was no observed benefit for aseptic revision THA (P = .36). CONCLUSIONS This meta-analysis demonstrated that patients treated with EAP were less likely to develop a PJI relative to those treated with the SoC for all TJA, primary TJA, primary THA, aseptic revision TJA, and aseptic revision TKA. There was no significant difference observed between EAP and SoC for primary TKA or aseptic revision THA.
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Affiliation(s)
- Suhas P Dasari
- Department of Orthopaedic Surgery, University of Washington, Seattle, Washington
| | - Sanjana D Kanumuri
- Department of Orthopaedic Surgery, University of Washington, Seattle, Washington
| | - JaeWon Yang
- Department of Orthopaedic Surgery, University of Washington, Seattle, Washington
| | - Paul A Manner
- Department of Orthopaedic Surgery, University of Washington, Seattle, Washington
| | - Navin D Fernando
- Department of Orthopaedic Surgery, University of Washington, Seattle, Washington
| | - Nicholas M Hernandez
- Department of Orthopaedic Surgery, University of Washington, Seattle, Washington
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Prevention Techniques Have Had Minimal Impact on the Population Rate of Prosthetic Joint Infection for Primary Total Hip and Knee Arthroplasty: A National Database Study. J Arthroplasty 2023; 38:1131-1140. [PMID: 36858132 DOI: 10.1016/j.arth.2023.02.059] [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: 11/01/2022] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Several studies over the years have offered modalities that may greatly decrease the rate of periprosthetic joint infection when implemented. As a result, one would expect a drastic decrease in infection rate among the implementing population with its widespread use. The purpose of this study was to assess whether there exists a decrease in infection rate over time, after accounting for available confounding variables, within a large national database. METHODS A large national database from 2005 to 2019 was queried for primary total hip arthroplasty (THA) and total knee arthroplasty (TKA). In total, 221,416 THAs and 354,049 TKAs were performed over the study period. Differences in 30-day infection rate were assessed with time and available preoperative risk factors using multinominal logistic regressions. RESULTS Rate of infection overall trended downward for both THA and TKA. After accounting for confounding variables, odds of THA infection marginally decreased over time (odds ratio 0.968 [0.952-0.985], P < .0001), while the odds of a TKA infection marginally increased with time (odds ratio 1.037 [1.020-1.054], P < .0001). CONCLUSION Individual peer-reviewed publications have presented infection control modalities demonstrating dramatic decreases in infection rate while analysis at a population level shows almost no changes in infection rate over a 15-year time period. This study supports continued investigation for influential modalities in preventing periprosthetic joint infection and care in patient selection for primary hip and knee arthroplasty.
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Chen L, Zheng M, Chen Z, Peng Y, Jones C, Graves S, Chen P, Ruan R, Papadimitriou J, Carey-Smith R, Leys T, Mitchell C, Huang YG, Wood D, Bulsara M, Zheng MH. The burden of end-stage osteoarthritis in Australia: a population-based study on the incidence of total knee replacement attributable to overweight/obesity. Osteoarthritis Cartilage 2022; 30:1254-1262. [PMID: 34890810 DOI: 10.1016/j.joca.2021.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 10/11/2021] [Accepted: 10/27/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To determine the risk of total knee replacement (TKR) for primary osteoarthritis (OA) associated with overweight/obesity in the Australian population. METHODS This population-based study analyzed 191,723 cases of TKR collected by the Australian Orthopaedic Association National Joint Registry and population data from the Australian Bureau of Statistics. The time-trend change in incidence of TKR relating to BMI was assessed between 2015 and 2018. The influence of obesity on the incidence of TKR in different age and gender groups was determined. The population attributable fraction (PAF) was then calculated to estimate the effect of obesity reduction on TKR incidence. RESULTS The greatest increase in incidence of TKR was seen in patients from obese class III. The incidence rate ratio for having a TKR for obesity class III was 28.683 at those aged 18-54 years but was 2.029 at those aged >75 years. Females in obesity class III were 1.7 times more likely to undergo TKR compared to similarly classified males. The PAFs of TKR associated with overweight or obesity was 35%, estimating 14,287 cases of TKR attributable to obesity in 2018. The proportion of TKRs could be reduced by 20% if overweight and obese population move down one category. CONCLUSIONS Obesity has resulted in a significant increase in the incidence of TKR in the youngest population in Australia. The impact of obesity is greatest in the young and the female population. Effective strategies to reduce the national obese population could potentially reduce 35% of the TKR, with over 10,000 cases being avoided.
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Affiliation(s)
- L Chen
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - M Zheng
- Institute for Health Research, Medical School, University of Notre Dame Australia, Fremantle, Western Australia, Australia
| | - Z Chen
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Y Peng
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, South Australia, Australia; Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, South Australia, Australia
| | - C Jones
- Department of Orthopaedic Surgery, Fiona Stanley Hospital Group, Perth, Western Australia, Australia
| | - S Graves
- Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, South Australia, Australia
| | - P Chen
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - R Ruan
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - J Papadimitriou
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia; Pathwest Laboratories, Perth, Western Australia, Australia
| | - R Carey-Smith
- Department of Orthopaedic Surgery, Sir Charles Gardner Hospital, Perth, Western Australia, Australia
| | - T Leys
- Department of Orthopaedic Surgery, Sir Charles Gardner Hospital, Perth, Western Australia, Australia
| | - C Mitchell
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Y G Huang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - D Wood
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - M Bulsara
- Institute for Health Research, Medical School, University of Notre Dame Australia, Fremantle, Western Australia, Australia.
| | - M H Zheng
- Centre for Translational Orthopaedic Research, Faculty of Health and Medical Sciences, University of Western Australia, Perth, Western Australia, Australia; Perron Institute for Neurological and Translational Science, Perth, Western Australia, Australia.
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Development and Characterization of Zein/Ag-Sr Doped Mesoporous Bioactive Glass Nanoparticles Coatings for Biomedical Applications. Bioengineering (Basel) 2022; 9:bioengineering9080367. [PMID: 36004892 PMCID: PMC9404864 DOI: 10.3390/bioengineering9080367] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/26/2022] [Accepted: 08/02/2022] [Indexed: 12/04/2022] Open
Abstract
Implants are used to replace damaged biological structures in human body. Although stainless steel (SS) is a well-known implant material, corrosion of SS implants leads to the release of toxic metallic ions, which produce harmful effects in human body. To prevent material degradation and its harmful repercussions, these implanted materials are subjected to biocompatible coatings. Polymeric coatings play a vital role in enhancing the mechanical and biological integrity of the implanted devices. Zein is a natural protein extracted from corn and is known to have good biocompatibility and biodegradability. In this study, zein/Ag-Sr doped mesoporous bioactive glass nanoparticles (Ag-Sr MBGNs) were deposited on SS substrates via electrophoretic deposition (EPD) at different parameters. Ag and Sr ions were added to impart antibacterial and osteogenic properties to the coatings, respectively. In order to examine the surface morphology of coatings, optical microscopy and scanning electron microscopy (SEM) were performed. To analyze mechanical strength, a pencil scratch test, bend test, and corrosion and wear tests were conducted on zein/Ag-Sr doped MBGN coatings. The results show good adhesion strength, wettability, corrosion, and wear resistance for zein/Ag-Sr doped MBGN coatings as compared to bare SS substrate. Thus, good mechanical and biological properties were observed for zein/Ag-Sr doped MBGN coatings. Results suggested these zein/Ag-Sr MBGNs coatings have great potential in bone regeneration applications.
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Lygrisse KA, Teo G, Singh V, Muthusamy N, Schwarzkopf R, William L. Comparison of silver-embedded occlusive dressings and negative pressure wound therapy following total joint arthroplasty in high BMI patients: a randomized controlled trial. Arch Orthop Trauma Surg 2022; 143:2989-2995. [PMID: 35779102 DOI: 10.1007/s00402-022-04530-1] [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: 04/19/2022] [Accepted: 06/16/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION High body mass index (BMI) and wound drainage following total joint arthroplasty (TJA) can lead to wound healing complications and periprosthetic joint infection. Silver-embedded occlusive dressings and negative pressure wound therapy (NPWT) have been shown to reduce these complications. The purpose of this prospective trial was to compare the effect of silver-embedded dressings and NPWT on wound complications in patients with BMI ≥ 35 m/kg2 undergoing TJA. METHODS We conducted a randomized control trial of patients who had a BMI > 35 m/kg2 and were undergoing primary TJA between October 2017 and February 2020. Patients who underwent revision surgery, or those with an active infection, previous scar, history of wound healing complications, post-traumatic degenerative joint disease with hardware, or inflammatory arthritis were excluded. Patients were randomized to receive either a silver-embedded occlusive dressing (control) or NPWT. Frequency distributions, means, and standard deviations were used to describe patient demographics, postoperative complications, 90-day readmissions, and reoperations. T-test and chi-squared tests were used to test for significant differences between continuous and categorical variables, respectively. RESULTS Two hundred-thirty patients with 3-month follow-up were included. One-hundred-fifteen patients received the control and 115 patients received NPWT. There were six patients (5.2%) in the control group with wound complications (drainage: n = 5, non-healing wound: n = 1) and two patients (1.7%) in the NPWT with complications (drainage: n = 2). There were no 90-day readmissions in the control group versus two (1.8%) 90-day readmissions in the NPWT group. Finally, three patients (2.6%) in the control group underwent reoperations (irrigation and debridement [I&D], I&D with modular implant exchange, and implant revision), while none in the NPWT group had undergone reoperation. The two groups showed insignificant differences in wound complications (p = 0.28), 90-day readmissions (p = 0.50), and reoperations (p = 0.25). CONCLUSION Patients with BMI ≥ 35 m/kg2 undergoing TJA have no statistical difference in early wound complications, readmissions, or reoperations when treated with either silver-embedded dressings or NPWT.
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Affiliation(s)
- Katherine A Lygrisse
- Department of Orthopedic Surgery, Huntington Hospital, Zucker School of Medicine Hofstra/Northwell, 270 Park Ave, Huntington, NY, 11743, USA
| | - Greg Teo
- Department of Orthopedic Surgery, Hospital for Special Surgeries, 541 East 71st St, 7th Fl, New York, NY, 10021, USA
| | - Vivek Singh
- Department of Orthopedic Surgery, NYU Langone Health, 301 East 17th Street, 15th Fl Suite 1518, New York, NY, 10003, USA
| | - Nishanth Muthusamy
- Department of Orthopedic Surgery, NYU Langone Health, 301 East 17th Street, 15th Fl Suite 1518, New York, NY, 10003, USA.
- Department of Orthopedic Surgery, Division of Adult Reconstructive Surgery, NYU Langone Health, 301, East 17th Street, New York, NY, 10003, USA.
| | - Ran Schwarzkopf
- Department of Orthopedic Surgery, NYU Langone Health, 301 East 17th Street, 15th Fl Suite 1518, New York, NY, 10003, USA
| | - Long William
- Department of Orthopedic Surgery, Hospital for Special Surgeries, 541 East 71st St, 7th Fl, New York, NY, 10021, USA
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Moerenhout K, Steinmetz S, Vautrin M, Picarra S, Udin G, Borens O. Economic advantage of ‘self-made’ antibiotic-loaded spacer compared to prefabricated antibiotic-loaded spacer and spacer molds in two-staged revision arthroplasty. Acta Orthop Belg 2021. [DOI: 10.52628/87.3.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Infection after total hip or total knee arthroplasty is a serious complication implying great costs for the health care system. Amongst the different treatment options, the two-step exchange using a spacer in the interval is a valid option. We evaluate the economic impact of our self-made antibiotic-loaded hip and knee cement spacers compared with prefabricated spacers and spacer molds.
Costs to prepare self-made cement spacers are detailed for each spacer type. We also assess the intraoperative time spent for fabricating our self-made hip and knee spacers.
The price of these self-made knee spacer is 514 CHF (450 EUR / 505 USD) if non-articulated and 535 CHF (470 EUR / 525 USD) if articulated ; the price for the self-made hip spacer is 749 CHF (760 EUR / 735 USD). Our average preparation time is 14 minutes for our self-made knee spacers and 16 minutes for our self-made hip spacers. While the senior surgeon is fabricating the self-spacers, another surgeon of the team continues intensive irrigation and debridement. Thus, no time is lost waiting for the self-spacer to be fabricated.
In our hands, self-made hip and knee spacers are at least 40-50% cheaper than prefabricated spacers and spacer-molds. This is a serious economic advantage in this already expensive surgery. When done in teamwork, self-spacer fabrication does not increase the surgery time. The economic advantage is added to the main and most important advantage of self- made spacers, which remains the possibility of patient adapted anatomical reconstruction of the joint.
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Okafor C, Hodgkinson B, Nghiem S, Vertullo C, Byrnes J. Cost of septic and aseptic revision total knee arthroplasty: a systematic review. BMC Musculoskelet Disord 2021; 22:706. [PMID: 34407779 PMCID: PMC8371784 DOI: 10.1186/s12891-021-04597-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 08/04/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND The increasing incidence of primary total knee arthroplasty (TKA) has led to an increase in both the incidence and the cost burden of revision TKA procedures. This study aimed to review the literature on the cost of revision TKA for septic and aseptic causes and to identify the major cost components contributing to the cost burden. METHODS We searched MEDLINE (OvidSp), Embase, Web of Science, Cochrane Library, EconLit, and Google Scholar to identify relevant studies. Selection, data extraction and assessment of the risk of bias and cost transparency within the studies were conducted by two independent reviewers, after which the cost data were analysed narratively for 1- or 2-stage septic revision without re-revision; 2-stage septic revision with re-revision; and aseptic revision with and without re-revision, respectively. The major cost components identified in the respective studies were also reported. RESULTS The direct medical cost from the healthcare provider perspective for high-income countries for 2-stage septic revision with re-revision ranged from US$66,629 to US$81,938, which can be about 2.5 times the cost of 1- or 2-stage septic revision without re-revision, (range: US$24,027 - US$38,109), which can be about double the cost of aseptic revision without re-revision (range: US$13,910 - US$29,213). The major cost components were the perioperative cost (33%), prosthesis cost (28%), and hospital ward stay cost (22%). CONCLUSIONS Septic TKA revision with re-revision for periprosthetic joint infection (PJI) increases the cost burden of revision TKA by 4 times when compared to aseptic single-stage revision and by 2.5 times when compared to septic TKA revision that does not undergo re-revision. Cost reductions can be achieved by reducing the number of primary TKA that develop PJI, avoidance of re-revisions for PJI, and reduction in the length of stay after revision. TRIAL REGISTRATION PROSPERO; CRD42020171988 .
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Affiliation(s)
- Charles Okafor
- Centre for Applied Health Economics, School of Medicine and Dentistry, Griffith University, 170 Kessels Road, Nathan, Queensland, 4111, Australia.
- Menzies Health Institute, Griffith University, Gold Coast, Queensland, Australia.
| | - Brent Hodgkinson
- Centre for Applied Health Economics, School of Medicine and Dentistry, Griffith University, 170 Kessels Road, Nathan, Queensland, 4111, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Queensland, Australia
| | - Son Nghiem
- Centre for Applied Health Economics, School of Medicine and Dentistry, Griffith University, 170 Kessels Road, Nathan, Queensland, 4111, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Queensland, Australia
| | - Christopher Vertullo
- Menzies Health Institute, Griffith University, Gold Coast, Queensland, Australia
- Knee Research Australia, Gold Coast, Queensland, Australia
| | - Joshua Byrnes
- Centre for Applied Health Economics, School of Medicine and Dentistry, Griffith University, 170 Kessels Road, Nathan, Queensland, 4111, Australia
- Menzies Health Institute, Griffith University, Gold Coast, Queensland, Australia
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Kheir MM, Dilley JE, Ziemba-Davis M, Meneghini RM. The AAHKS Clinical Research Award: Extended Oral Antibiotics Prevent Periprosthetic Joint Infection in High-Risk Cases: 3855 Patients With 1-Year Follow-Up. J Arthroplasty 2021; 36:S18-S25. [PMID: 33589279 PMCID: PMC9161732 DOI: 10.1016/j.arth.2021.01.051] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/05/2021] [Accepted: 01/19/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Surgical and host factors predispose patients to periprosthetic joint infection (PJI) after primary total hip arthroplasty (THA) and total knee arthroplasty (TKA). While surgical factors are modifiable, host factors can be challenging, and there are limited data demonstrating that preoperative patient optimization decreases risk of PJI. The goal of this study was to evaluate whether extended oral antibiotic prophylaxis reduces the one-year infection rate in high-risk patients. METHODS A total of 3855 consecutive primary THAs and TKAs performed between 2011 and 2019 at a suburban academic hospital with modern perioperative and infection-prevention protocols were retrospectively reviewed. Beginning in January 2015, a 7-day oral antibiotic prophylaxis protocol was implemented after discharge for patients at high risk for PJI. The percentage of high-risk patients diagnosed with PJI within 1 year was compared between groups that did and did not receive extended antibiotic prophylaxis. Univariate and logistic regression analyses were performed, with P ≤ .05 denoting statistical significance. RESULTS Overall 1-year infection rates were 2.26% and 0.85% after THA and TKA, respectively. High-risk patients with extended antibiotic prophylaxis had a significantly lower rate of PJI than high-risk patients without extended antibiotic prophylaxis (0.89% vs 2.64%, respectively; P < .001). There was no difference in the infection rate between high-risk patients who received antibiotics and low-risk patients (0.89% vs 1.29%, respectively; P = .348) with numbers available. CONCLUSION Extended postoperative oral antibiotic prophylaxis for 7 days led to a statistically significant and clinically meaningful reduction in 1-year infection rates of patients at high risk for infection. In fact, the PJI rate in high-risk patients who received antibiotics was less than the rate seen in low-risk patients. Thus, extended oral antibiotic prophylaxis may be a simple measure to effectively counteract poor host factors. Moreover, the findings of this study may mitigate the incentive to select healthier patients in outcome-based reimbursement models. Further study with a multicenter randomized control trial is needed to further validate this protocol. LEVEL OF EVIDENCE Therapeutic level III.
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Affiliation(s)
- Michael M. Kheir
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN
| | - Julian E. Dilley
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN
| | | | - R. Michael Meneghini
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN,Indiana University Health Saxony Hip & Knee Center, Fishers, IN,Address correspondence to: R. Michael Meneghini, MD, Department of Orthopaedic Surgery, Indiana University Health Physicians Orthopedics and Sports Medicine, Indiana University School of Medicine, 13100 East 136th Street, Suite 2000, Fishers, IN 46037
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Okafor CE, Nghiem S, Vertullo C, Byrnes J. Cost of Revision Total Knee Replacement: A Protocol for Systematic Review and Meta-Analysis. PHARMACOECONOMICS - OPEN 2021; 5:331-337. [PMID: 33237525 PMCID: PMC8160044 DOI: 10.1007/s41669-020-00242-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND A major limitation of total knee replacement (TKR), as with other joint replacements, is the risk of revision. Revision TKR is associated with high risk and economic burden to patients, healthcare providers, and societies. It will be worthwhile to assess the economic burden of revision TKR across countries or different study settings. This study aims to review the literature on the cost of revision TKR to assess costs across countries and studies, estimate a pooled cost estimate for homogenous data, and identify major cost components that contribute to the cost burden. METHODS We will conduct a search of the MEDLINE (OvidSp), EMBASE, Web of Science, Cochrane Library, EconLit, and Google Scholar databases to identify relevant studies, and will use an optimally designed search approach to search for relevant studies. EndNote library will be used to manage the searched studies. Selection will be undertaken in two phases-screening and eligibility. Study selection, data extraction, and assessment of the risk of bias will be performed in duplicate, after which the data will be analysed narratively and a meta-analysis performed for homogenous studies, if possible. DISCUSSION This protocol provides a proposed stepwise plan for conducting a systematic review and meta-analysis of the cost of revision TKR. Findings from this systematic review will provide information about the cost across settings and identify the major cost drivers of revision TKR, which will, in turn, stimulate efforts to minimize the cost. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42020171988.
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Affiliation(s)
- Charles Ebuka Okafor
- Centre for Applied Health Economics, School of Medicine, Griffith University, 170 Kessels Road, Nathan, QLD, 4111, Australia.
- Menzies Health Institute, Gold Coast, QLD, Australia.
| | - Son Nghiem
- Centre for Applied Health Economics, School of Medicine, Griffith University, 170 Kessels Road, Nathan, QLD, 4111, Australia
- Menzies Health Institute, Gold Coast, QLD, Australia
| | - Christopher Vertullo
- Menzies Health Institute, Gold Coast, QLD, Australia
- Orthopaedic Surgery and Sports Medicine Centre, Gold Coast, QLD, Australia
- Knee Research Australia, Gold Coast, QLD, Australia
| | - Joshua Byrnes
- Centre for Applied Health Economics, School of Medicine, Griffith University, 170 Kessels Road, Nathan, QLD, 4111, Australia
- Menzies Health Institute, Gold Coast, QLD, Australia
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A Novel Biofilm-Disrupting Wound Care Technology for the Prevention of Surgical Site Infections Following Total Joint Arthroplasty: A Conceptual Review. Surg Technol Int 2021. [PMID: 34005832 DOI: 10.52198/21.sti.38.os1447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Surgical site infections (SSIs) are a major driver for increased costs following lower extremity joint arthroplasty procedures. It has been estimated that these account for over $2 billion in annual costs in the United States. While many of the current strategies for the prevention and treatment of SSIs target planktonic bacteria, 80 to 90% of bacterial pathogens exist in a sessile state. These sessile bacteria can produce extracellular polymeric substance (EPS) as protective barriers from host immune defenses and antimicrobial agents and thus, can be exceedingly difficult to eradicate. A novel wound care gel that disrupts the EPS and destroys the inciting pathogens has been developed for the treatment and prevention of biofilm-related infections. This is achieved by the simultaneous action of four key ingredients: (1) citric acid; (2) sodium citrate; (3) benzalkonium chloride; and (4) polyethylene glycol. Together, these constituents create a high osmolarity, pH-controlled environment that deconstructs and prevents biofilm formation, while destroying pathogens and promoting a moist environment for optimal wound healing. The available clinical evidence demonstrating the efficacy of this technology has been summarized, as well as the economic implications of its implementation and the authors' preferred method of its use. Due to the multifaceted burden associated with biofilm-producing bacteria in arthroplasty patients, this technology may prove to be beneficial for patients who have higher risks for infection, or perhaps, as a prophylactic measure to prevent infections for all patients.
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11
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Morcos MW, Kooner P, Marsh J, Howard J, Lanting B, Vasarhelyi E. The economic impact of periprosthetic infection in total knee arthroplasty. Can J Surg 2021; 64:E144-E148. [PMID: 33666386 PMCID: PMC8064239 DOI: 10.1503/cjs.012519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Background Currently, the gold standard treatment for periprosthetic joint infection (PJI) after total knee arthroplasty (TKA) is 2-stage revision, but few studies have looked at the economic impact of PJI on the health care system. The objective of this study was to obtain an accurate estimate of the institutional cost associated with the management of PJI in TKA and to assess the economic impact of PJI after TKA compared to uncomplicated primary TKA. Methods We identified consecutive patients in our institutional database who had undergone 2-stage revision TKA for PJI between 2010 and 2014 and matched them on age and body mass index with patients who had undergone uncomplicated primary TKA over the same period. We calculated all costs associated with the 2 procedures and compared mean costs, length of stay, clinical visits and readmission rates between the 2 groups. Results There were 73 patients (mean age 68.8 [range 48–91] yr) in the revision TKA cohort and 73 patients (mean age 65.9 [range 50–86] yr) in the primary TKA cohort. Two-stage revision surgery was associated with a significantly longer hospital stay (mean 22.7 d v. 3.84 d, p < 0.001), more outpatient clinic visits (mean 8 v. 3, p < 0.001), more readmissions (29 v. 0, p < 0.001) and higher overall cost (mean $35 429.97 v. $6809.94, p < 0.001) than primary TKA. Conclusion Treatment for PJI after TKA has an enormous economic impact on the health care system. Our data suggest a fivefold increase in expenditure in the management of this complication compared to uncomplicated primary TKA.
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Affiliation(s)
- Mina W Morcos
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, St. Michael's Hospital, Toronto, Ont. (Morcos); and the Division of Orthopaedic Surgery, Department of Surgery, Western University, London Health Sciences Centre and University Hospital, London, Ont. (Kooner, Marsh, Howard, Lanting, Vasarhelyi)
| | - Paul Kooner
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, St. Michael's Hospital, Toronto, Ont. (Morcos); and the Division of Orthopaedic Surgery, Department of Surgery, Western University, London Health Sciences Centre and University Hospital, London, Ont. (Kooner, Marsh, Howard, Lanting, Vasarhelyi)
| | - Jackie Marsh
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, St. Michael's Hospital, Toronto, Ont. (Morcos); and the Division of Orthopaedic Surgery, Department of Surgery, Western University, London Health Sciences Centre and University Hospital, London, Ont. (Kooner, Marsh, Howard, Lanting, Vasarhelyi)
| | - James Howard
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, St. Michael's Hospital, Toronto, Ont. (Morcos); and the Division of Orthopaedic Surgery, Department of Surgery, Western University, London Health Sciences Centre and University Hospital, London, Ont. (Kooner, Marsh, Howard, Lanting, Vasarhelyi)
| | - Brent Lanting
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, St. Michael's Hospital, Toronto, Ont. (Morcos); and the Division of Orthopaedic Surgery, Department of Surgery, Western University, London Health Sciences Centre and University Hospital, London, Ont. (Kooner, Marsh, Howard, Lanting, Vasarhelyi)
| | - Edward Vasarhelyi
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, St. Michael's Hospital, Toronto, Ont. (Morcos); and the Division of Orthopaedic Surgery, Department of Surgery, Western University, London Health Sciences Centre and University Hospital, London, Ont. (Kooner, Marsh, Howard, Lanting, Vasarhelyi)
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12
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Yao JJ, Hevesi M, Visscher SL, Ransom JE, Lewallen DG, Berry DJ, Maradit Kremers H. Direct Inpatient Medical Costs of Operative Treatment of Periprosthetic Hip and Knee Infections Are Twofold Higher Than Those of Aseptic Revisions. J Bone Joint Surg Am 2021; 103:312-318. [PMID: 33252589 PMCID: PMC8327701 DOI: 10.2106/jbjs.20.00550] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Periprosthetic joint infections (PJIs) following total hip arthroplasty (THA) and total knee arthroplasty (TKA) are associated with substantial morbidity. A better understanding of the costs of PJI treatment can inform prevention, treatment, and reimbursement strategies. The purpose of the present study was to describe direct inpatient medical costs associated with the treatment of hip and knee PJI. METHODS At a single tertiary care institution, 176 hips and 266 knees that underwent 2-stage revisions for the treatment of PJI from 2009 to 2015 were compared with 1,611 hips and 1,276 knees that underwent revisions for aseptic indications. In addition, 84 hips and 137 knees that underwent irrigation and debridement (I&D) with partial component exchange were compared with 39 hips and 138 knees that underwent partial component exchange for aseptic indications. Line-item details of services billed during hospitalization were retrieved, and standardized direct medical costs were calculated in 2018 inflation-adjusted dollars. RESULTS The mean direct medical cost of 2-stage revision THA performed for the treatment of PJI was significantly higher than that of aseptic revision THA ($58,369 compared with $22,846, p < 0.001). Similarly, the cost of 2-stage revision TKA performed for the treatment of PJI was significantly higher than that of aseptic revision TKA ($56,900 compared with $24,630, p < 0.001). Even when the total costs of aseptic revisions were doubled for a representative comparison with 2-stage procedures, the costs of PJI procedures were 15% to 28% higher than those of the doubled costs of aseptic revisions (p < 0.001). The mean direct medical cost of I&D procedures for PJI was about twofold higher than of partial component exchange for aseptic indications. CONCLUSIONS The direct medical costs of operative treatment of PJI following THA and TKA are twofold higher than the costs of similar aseptic revisions. The high economic burden of PJI warrants efforts to reduce the incidence of PJI. Reimbursement schemes should account for the high costs of treating PJI in order to ensure sustainable patient care. LEVEL OF EVIDENCE Economic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Jie J Yao
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington
| | - Mario Hevesi
- Departments of Orthopedic Surgery (M.H., D.G.L., D.J.B., and H.M.K.) and Health Sciences Research (S.L.V., J.E.R., and H.M.K.), Mayo Clinic, Rochester, Minnesota
| | - Sue L Visscher
- Departments of Orthopedic Surgery (M.H., D.G.L., D.J.B., and H.M.K.) and Health Sciences Research (S.L.V., J.E.R., and H.M.K.), Mayo Clinic, Rochester, Minnesota
| | - Jeanine E Ransom
- Departments of Orthopedic Surgery (M.H., D.G.L., D.J.B., and H.M.K.) and Health Sciences Research (S.L.V., J.E.R., and H.M.K.), Mayo Clinic, Rochester, Minnesota
| | - David G Lewallen
- Departments of Orthopedic Surgery (M.H., D.G.L., D.J.B., and H.M.K.) and Health Sciences Research (S.L.V., J.E.R., and H.M.K.), Mayo Clinic, Rochester, Minnesota
| | - Daniel J Berry
- Departments of Orthopedic Surgery (M.H., D.G.L., D.J.B., and H.M.K.) and Health Sciences Research (S.L.V., J.E.R., and H.M.K.), Mayo Clinic, Rochester, Minnesota
| | - Hilal Maradit Kremers
- Departments of Orthopedic Surgery (M.H., D.G.L., D.J.B., and H.M.K.) and Health Sciences Research (S.L.V., J.E.R., and H.M.K.), Mayo Clinic, Rochester, Minnesota
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13
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Amaro E, Moore-Lotridge SN, Wessinger B, Benvenuti MA, An TJ, Oelsner WK, Polkowski GG, Schoenecker JG. Albumin and the fibrinogen-to-albumin ratio: Biomarkers for the acute phase response following total knee arthroplasty. PLoS One 2021; 16:e0247070. [PMID: 33592030 PMCID: PMC7886137 DOI: 10.1371/journal.pone.0247070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/29/2021] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Complications following total knee arthroplasty (TKA) lead to patient morbidity and cost. While acute phase reactants, such as c-reactive protein (CRP) and fibrinogen, have been used to predict complications following TKA, the extent and duration of changes in albumin levels following TKA are unknown. It is hypothesized that like CRP and fibrinogen, albumin, and the fibrinogen/albumin ratio (FAR) represent useful measures of the acute phase response (APR) following TKA. The purpose of this study was to describe the longitudinal course of albumin and FAR in healthy patients following TKA, relative to established biomarkers, and examine if the variance in albumin or FAR correlates with patient comorbidities. METHODS This retrospective cohort study of patients undergoing TKA at a tertiary medical center. CRP, fibrinogen, and albumin values were collected pre- and post-operatively. An age-adjusted Charlson comorbidity index (CCI) was utilized as a measure of patient comorbidity status. RESULTS The median preoperative albumin value was 4.3 g/dL, which dropped to 3.6 g/dL on postoperative day 1 following TKA. The albumin value returned to 93% of the baseline by postoperative week 2. The course of albumin inversely mirrored the course of CRP (r = -0.41). Median preoperative FAR was 0.087 g/L, which rose to 0.130 g/L by postoperative week 2 and returned to baseline by postoperative week 6. While preoperative FAR strongly correlated with postoperative week 2 values (r = 0.74), there was a weak positive correlation between age-adjusted CCI and pre-operative FAR (r = 0.24) in patients undergoing primary TKA. CONCLUSION Albumin levels follow a predictable postoperative decline that inversely correlates with CRP in healthy patients following TKA. Given the low cost and abundance of laboratories offering albumin levels, direct albumin levels and/or albumin ratios such as FAR may be underutilized biomarkers for monitoring the APR following TKA.
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Affiliation(s)
- Emilie Amaro
- Department of Orthopedics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Stephanie N. Moore-Lotridge
- Department of Orthopedics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Bronson Wessinger
- School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Michael A. Benvenuti
- Department of Orthopedics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Thomas J. An
- School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - William K. Oelsner
- Department of Orthopedics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Gregory G. Polkowski
- Department of Orthopedics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Jonathan G. Schoenecker
- Department of Orthopedics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Pharmacology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- * E-mail:
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Maale GE, Eager JJ, Srinivasaraghavan A, Mohammadi DK, Kennard N. The evolution from the two stage to the one stage procedure for biofilm based periprosthetic joint infections (PJI). Biofilm 2020; 2:100033. [PMID: 33447818 PMCID: PMC7798473 DOI: 10.1016/j.bioflm.2020.100033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/16/2020] [Accepted: 07/22/2020] [Indexed: 01/21/2023] Open
Abstract
A definitive consensus on the optimal limb salvage protocol for infected total joints does not currently exist. Popular, is the two-stage revision which calls for the use of an antibiotic loaded spacer followed by a delayed exchange. Our question is whether single-stage revisions for biofilm based infected arthroplasties results in comparable or possibly better patient outcomes as compared to those reported for two-stage revisions. We retrospectively reviewed 500 cases of one-stage revisions for periprosthetic joint infections (PJI) using dual setup with radical debridement, definitive reconstruction with antibiotic loaded cement and implantation of antibiotic calcium sulfate pellets between the years 2005-2017. The revisions included 351 total knees, 122 hips, 2 hip-femur-knees, 13 shoulders, 10 elbows, and 2 shoulder-humerus-elbows. The patient population had a mean follow-up of 60 months (range: 24 months-14 years) and mean patient age of 61 years old, consisting of 250 males and 250 females. Patient comorbidities were reviewed, classified using McPherson's staging for PJIs, and compared to the Cierny & Mader classification system. Successful treatment was defined as a joint without recurrence of infection, for a minimum of 2 years, and limb preservation. Based on our findings, one-stage revision of PJIs demonstrates at least as good an infection eradication rate as two-stage revision: 88% vs 85% respectively.
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Affiliation(s)
- Gerhard E. Maale
- Dallas-Ft. Worth Sarcoma Group, 4708 Alliance Blvd, Plano, TX, 75093, United States
| | - John J. Eager
- Emory University Hospital System, 1364 Clifton Rd, Atlanta, GA, 30322, United States
| | | | | | - Nicole Kennard
- Dallas-Ft. Worth Sarcoma Group, 4708 Alliance Blvd, Plano, TX, 75093, United States
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Lim J, Pang HN, Tay K, Chia SL, Yeo SJ, Lo NN. Patient-reported Outcome Measures of Revision Total Hip Arthroplasty for Prosthetic Joint Infection is not Inferior to Aseptic Revision Total Hip Arthroplasty. Malays Orthop J 2020; 14:73-81. [PMID: 33403065 PMCID: PMC7751992 DOI: 10.5704/moj.2011.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Introduction: This study aims to investigate whether patients undergoing two-stage revision total hip arthroplasty (THA) for prosthetic joint infection (PJI) and one-stage revision THA for aseptic reasons have similar clinical outcomes and patient satisfaction during their post-operative follow-up. We hypothesise that the two-stage revision THA for PJI is associated with poorer outcomes as compared to aseptic revision THA. Materials and Methods: We reviewed prospectively collected data in our tertiary hospital arthroplasty registry and identified patients who underwent revision THA between 2001 and 2014, with a minimum of two years follow-up. The study group (two-stage revision THA for PJI) consists of 23 patients and the control group (one-stage revision THA for aseptic reasons) consists of 231 patients. Patient demographics, Western Ontario and McMaster Universities Arthritis Index (WOMAC), Oxford Hip Score (OHS), Short Form-36 (SF-36) scores and patient reported satisfaction were evaluated. Student’s t-test was used to compare continuous variables between the two groups. Statistical significance was defined as p <0.05. Results: The pre-operative demographics and clinical scores were relatively similar between the two groups of patients. At two years, patients who underwent revision THA for PJI reported a better WOMAC Pain Score and OHS as compared to aseptic revision THA. A similar proportion of patients were satisfied with their results of surgery in both groups (p=0.093). Conclusions: Although patients who underwent revision THA for PJI had poorer pre-operative functional scores (WOMAC function and SF-36 PF), at two years follow-up, these two groups of patients have comparable post-operative outcomes. Interestingly, patients who had revision THA for PJI reported a better clinical outcome in terms of OHS and WOMAC Pain score as compared to the aseptic group. We conclude that the revision THA for PJI is not inferior to aseptic revision THA in terms of patient satisfaction and clinical outcomes.
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Affiliation(s)
- Jbt Lim
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore
| | - H N Pang
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore
| | - Kjd Tay
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore
| | - S L Chia
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore
| | - S J Yeo
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore
| | - N N Lo
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore
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16
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High-Dimensional Analysis of Immune Cell Composition Predicts Periprosthetic Joint Infections and Dissects Its Pathophysiology. Biomedicines 2020; 8:biomedicines8090358. [PMID: 32957521 PMCID: PMC7554968 DOI: 10.3390/biomedicines8090358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 09/06/2020] [Accepted: 09/15/2020] [Indexed: 12/12/2022] Open
Abstract
Accurate diagnosis of periprosthetic joint infections (PJI) is one of the most widely researched areas in modern orthopedic endoprosthesis. However, our understanding of the immunological basis of this severe complication is still limited. In this study, we developed a flow cytometric approach to precisely characterize the immune cell composition in periprosthetic joints. Using high-dimensional multi-parametric data, we defined, for the first time, the local immune cell populations of artificial joints. We identified significant differences in the cellular distribution between infected and non-infected samples, and revealed that myeloid-derived suppressor cells (MDSCs) act as potential regulators of infiltrating immune cells in PJI. Further, we developed an algorithm to predict septic and aseptic samples with high sensitivity and specificity, that may serve as an indispensable addition to the current criteria of the Musculoskeletal Infection Society. This study describes a novel approach to flow cytometrically analyze the immune cell infiltrate of joint fluid that not only improves our understanding of the pathophysiology of PJI, but also enables the development of a novel screening tool to predict infection status. Our data further suggest that pharmacological targeting of MDSCs represents a novel strategy for addressing PJI.
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Thomas B, Benedikt M, Alamri A, Kapp F, Bader R, Summer B, Thomas P, Oppel E. The role of antibiotic-loaded bone cement in complicated knee arthroplasty: relevance of gentamicin allergy and benefit from revision surgery - a case control follow-up study and algorithmic approach. J Orthop Surg Res 2020; 15:319. [PMID: 32787962 PMCID: PMC7425164 DOI: 10.1186/s13018-020-01855-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 07/31/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Antibiotic-loaded (particularly gentamicin) bone cement (BC) is widely used in total joint arthroplasty (TJA) to prevent periprosthetic infections (PPIs), but may itself cause implant failure. In light of a complete lack in literature, the objective was to assess the clinical relevance of gentamicin allergy for failure of cemented total knee arthroplasties in 25 out of 250 patients with positive patch test reactions to gentamicin and otherwise unexplained symptoms by evaluating benefits from revision with change to gentamicin-free cement. METHODS Fifteen of these 25 patients and their treating orthopaedic surgeons agreed to a re-assessment. They were surveyed regarding interim course of therapy and symptoms, including re-assessment of the Knee Injury and Osteoarthritis Outcome Score (KOOS), and underwent follow-up clinical and radiographic investigations. The initial use of gentamicin-loaded BC was reaffirmed by review of the primary implantation operative reports and respective implant passports. Primary and follow-up KOOS scores were analyzed regarding benefits from revision surgery by comparing nine patients with revision to six without revision. RESULTS Mean follow-up time was 38 months. The entirety of patients experienced an improvement of self-reported symptoms, with revision surgery (i.e., switching to gentamicin-free BC or uncemented total knee arthroplasty) yielding significantly greater improvement (p = 0.031): the nine revised patients reported a significant symptom relief (p = 0.028), contrary to the six unrevised patients (p = 0.14). Interestingly, the decision to proceed with revision surgery was significantly correlated with higher symptom severity (p = 0.05). CONCLUSION In symptomatic total knee arthroplasty with gentamicin allergy, uncemented revision arthroplasty or change to gentamicin-free BC provides significant symptom relief.
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Affiliation(s)
- Benjamin Thomas
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany. .,Department of Hand, Plastic, and Reconstructive Surgery, Burn Center, BG Trauma Center, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany.
| | - Maria Benedikt
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany.,Department of Anesthesiology and Intensive Care, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Germany
| | - Ali Alamri
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany
| | - Florian Kapp
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany
| | - Rainer Bader
- Department of Orthopaedics, University of Rostock, Doberaner Strasse 142, 18057, Rostock, Germany
| | - Burkhard Summer
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany
| | - Peter Thomas
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany
| | - Eva Oppel
- Department of Dermatology and Allergology, Ludwig-Maximilians-University Munich, Frauenlobstrasse 9-11, 80337, Munich, Germany
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Cost-Effectiveness of Arthroplasty Management in Hip and Knee Osteoarthritis: a Quality Review of the Literature. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2020. [DOI: 10.1007/s40674-020-00157-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Taghizadeh L, Karimi A, Presterl E, Heitzinger C. Bayesian inversion for a biofilm model including quorum sensing. Comput Biol Med 2019; 117:103582. [PMID: 31885354 DOI: 10.1016/j.compbiomed.2019.103582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 10/25/2022]
Abstract
We propose a mathematical model based on a system of partial differential equations (PDEs) for biofilms. This model describes the time evolution of growth and degradation of biofilms which depend on environmental factors. The proposed model also includes quorum sensing (QS) and describes the cooperation among bacteria when they need to resist against external factors such as antibiotics. The applications include biofilms on teeth and medical implants, in drinking water, cooling water towers, food processing, oil recovery, paper manufacturing, and on ship hulls. We state existence and uniqueness of solutions of the proposed model and implement the mathematical model to discuss numerical simulations of biofilm growth and cooperation. We also determine the unknown parameters of the presented biofilm model by solving the corresponding inverse problem. To this end, we propose Bayesian inversion techniques and the delayed-rejection adaptive-Metropolis (DRAM) algorithm for the simultaneous extraction of multiple parameters from the measurements. These quantities cannot be determined directly from the experiments or from the computational model. Furthermore, we evaluate the presented model by comparing the simulations using the estimated parameter values with the measurement data. The results illustrate a very good agreement between the simulations and the measurements.
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Affiliation(s)
- Leila Taghizadeh
- Institute for Analysis and Scientific Computing, Vienna University of Technology (TU Wien), Wiedner Hauptstraße 8-10, 1040 Vienna, Austria.
| | - Ahmad Karimi
- Institute for Analysis and Scientific Computing, Vienna University of Technology (TU Wien), Wiedner Hauptstraße 8-10, 1040 Vienna, Austria.
| | - Elisabeth Presterl
- Department for Hospital Hygiene and Infection Control, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria.
| | - Clemens Heitzinger
- Institute for Analysis and Scientific Computing, Vienna University of Technology (TU Wien), Wiedner Hauptstraße 8-10, 1040 Vienna, Austria; School of Mathematical and Statistical Sciences, Arizona State University, Tempe, AZ 85287, USA.
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20
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Benatto MT, Hussein AM, Gava NF, Maranho DA, Engel EE. COMPLICATIONS AND COST ANALYSIS OF HEMIPELVECTOMY FOR THE TREATMENT OF PELVIC TUMORS. ACTA ORTOPEDICA BRASILEIRA 2019; 27:104-107. [PMID: 30988656 PMCID: PMC6442717 DOI: 10.1590/1413-785220192702206721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Objective: Hemipelvectomy is a complex surgery with a high complication rate. Here, we aimed to identify factors related to the onset of complications and calculate their impacts on hospital costs. Methods: We evaluated 31 consecutive patients who underwent hemipelvectomy between 1999 and 2015. We assessed the clinical and radiographic data to determine the patients’ demographic factors, tumor and surgical characteristics, and complications. The individual hospital stays and financial balances were assessed up to 6 months following the index surgery. Results: The overall complication rate was 61% (19/31). Infection was the most prevalent complication (36%). Immediate postoperative death occurred in 5/31 patients (16%); another 5 (16%) died after hospital discharge due to disease progression. Histological grade, previous surgery, and previous radiotherapy were not associated with complications or infection. Acetabular resections, bone reconstruction, and longer operative times were associated with infection, whereas older age, pelvic organ involvement, and comorbidities were associated with immediate postoperative death. Complications and infection were associated with 4.8- and 5.9-fold increases in hospital costs, respectively. Conclusions: Acetabular resection and bone reconstruction are important factors that increase short-term complication rates, infection rates, and hospital costs. Mortality was associated with older age and adjacent pelvic tumor progression. Level of Evidence: IV, case series.
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Anemüller R, Belden K, Brause B, Citak M, Del Pozo JL, Frommelt L, Gehrke T, Hewlett A, Higuera CA, Hughes H, Kheir M, Kim KI, Konan S, Lausmann C, Marculescu C, Morata L, Ramirez I, Rossmann M, Silibovsky R, Soriano A, Suh GA, Vogely C, Volpin A, Yombi J, Zahar A, Zimmerli W. Hip and Knee Section, Treatment, Antimicrobials: Proceedings of International Consensus on Orthopedic Infections. J Arthroplasty 2019; 34:S463-S475. [PMID: 30348582 DOI: 10.1016/j.arth.2018.09.032] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Zirconium Nitride Coating Reduced Staphylococcus epidermidis Biofilm Formation on Orthopaedic Implant Surfaces: An In Vitro Study. Clin Orthop Relat Res 2019; 477:461-466. [PMID: 30418277 PMCID: PMC6370079 DOI: 10.1097/corr.0000000000000568] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND One of the most commonly identified pathogens responsible for orthopaedic implant infection is Staphylococcus epidermidis, which can form biofilms on surfaces. Currently, orthopaedic implants made of various surface materials are available, each with features influencing osseointegration, biocompatibility, and adherence of bacteria to the surface, which is the first step in biofilm formation. The aim of this experimental study was to investigate the effect of a high tribologic-resistant 2.5-µm zirconium nitride top coat on an antiallergic multilayer ceramic-covered cobalt-chromium-molybdenum surface on the formation of S. epidermidis biofilm compared with other commonly used smooth and rough orthopaedic implant surface materials. QUESTIONS/PURPOSES (1) When evaluating the surfaces of a cobalt-chromium-molybdenum (CoCrMo) alloy with a zirconium (Zr) nitride coating, a CoCrMo alloy without a coating, titanium alloy, a titanium alloy with a corundum-blasted rough surface, and stainless steel with a corundum-blasted rough surface, does a Zr coating reduce the number of colony-forming units of S. epidermidis in an in vitro setting? (2) Is there quantitatively less biofilm surface area on Zr-coated surfaces than on the other surfaces tested in this in vitro model? METHODS To determine bacterial adhesion, five different experimental implant surface discs were incubated separately with one of 31 different S. epidermidis strains each and subsequently sonicated. Twenty test strains were obtained from orthopaedic patients undergoing emergency hip prosthesis surgeries or revision of implant infection and 10 further strains were obtained from the skin of healthy individuals. Additionally, one reference strain, S. epidermidis DSM 3269, was tested. After serial dilutions, the number of bacteria was counted and expressed as colony-forming units (CFUs)/mL. For biofilm detection, discs were stained with 0.1% Safranin-O for 15 minutes, photographed, and analyzed with computer imaging software. RESULTS The lowest bacterial count was found in the CoCrMo + Zr surface disc (6.6 x 10 CFU/mL ± 4.6 x 10 SD) followed by the CoCrMo surface (1.1 x 10 CFU/mL ± 1.9 x 10 SD), the titanium surface (1.36 x 10 CFU/mL ± 1.8 x 10 SD), the rough stainless steel surface (2.65 x 10 CFU/mL ± 3.8 x 10 SD), and the rough titanium surface (2.1 x 10 CFU/mL ± 3.0 x 10 SD). The mean CFU count was lower for CoCrMo + Zr discs compared with the rough stainless steel surface (mean difference: 2.0 x 10, p = 0.021), the rough titanium alloy surface (mean difference: 1.4 x 10, p = 0.002), and the smooth titanium surface (mean difference: 7.0 x 10, p = 0.016). The results of biofilm formation quantification show that the mean covered area of the surface of the CoCrMo + Zr discs was 19% (± 16 SD), which was lower than CoCrMo surfaces (35% ± 23 SD), titanium alloy surface (46% ± 20 SD), rough titanium alloy surface (66% ± 23 SD), and rough stainless steel surface (58% ± 18 SD). CONCLUSIONS These results demonstrate that a multilayer, ceramic-covered, CoCrMo surface with a 2.5-µm zirconium nitride top coat showed less S. epidermidis biofilm formation compared with other surface materials used for orthopaedic implants. CLINICAL RELEVANCE CoCrMo with a 2.5-µm zirconium nitride top coat seems to be a promising surface modification technology able to reduce bacterial attachment on the surface of an implant and, hence, may further prevent implant infection with S. epidermidis biofilm formation.
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Vertullo CJ, de Steiger RN, Lewis PL, Lorimer M, Peng Y, Graves SE. The Effect of Prosthetic Design and Polyethylene Type on the Risk of Revision for Infection in Total Knee Replacement: An Analysis of 336,997 Prostheses from the Australian Orthopaedic Association National Joint Replacement Registry. J Bone Joint Surg Am 2018; 100:2033-2040. [PMID: 30516626 DOI: 10.2106/jbjs.17.01639] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Periprosthetic infection following total knee replacement remains alarmingly frequent, is devastating for patients, and is an increasingly substantial public health burden. While both the prosthetic design elements and type of polyethylene used in total knee replacement can independently affect survivorship of the prosthesis, their influence on the risk of revision for infection is unknown. Therefore, we examined the effects of total knee prosthetic design and type of polyethylene bearing on the long-term revision risk for nonacute infection following total knee replacement by comparing 4 different cohorts: patients who had minimally stabilized total knee prostheses with crosslinked polyethylene (XLPE) bearing surfaces, minimally stabilized total knee prostheses with noncrosslinked polyethylene (NXLPE), posterior stabilized total knee prostheses with XLPE, and posterior stabilized total knee prostheses with NXLPE. METHODS National registry data on revision procedures for surgeon-reported infection following primary total knee replacement for osteoarthritis from September 1999 through December 2015 were obtained for 4 patient cohorts. The cohorts were defined by the total knee prosthetic design and polyethylene type used. Revisions at ≤6 months were censored to reduce confounding bias. Hazard ratios (HRs) were adjusted for age, sex, and antibiotic cement usage. RESULTS A total of 336,997 primary total knee prostheses were included, 1,651 (0.49%) of which underwent revision for periprosthetic infection. Compared with minimally stabilized total knee prostheses that had XLPE bearing surfaces, the revision risk for infection, adjusted for age, sex, and antibiotic cement usage, was 25% higher for minimally stabilized total knee prostheses with NXLPE bearing surfaces (HR = 1.25 [95% confidence interval (CI), 1.07 to 1.45]; p = 0.003), 89% higher for posterior stabilized total knee prostheses with XLPE (HR = 1.89 [95% CI, 1.52 to 2.35]; p < 0.001), and 102% higher for posterior stabilized total knee prostheses with NXLPE (HR = 2.02 [95% CI, 1.72 to 2.37]; p < 0.001). Posterior stabilized total knee prostheses with NXLPE had a 61% higher risk of infection compared with minimally stabilized total knee prostheses with NXLPE (HR = 1.61 [95% CI, 1.43 to 1.83]; p < 0.001). The revision risk for infection for posterior stabilized total knee prostheses with NXLPE was the same as that for posterior stabilized total knee prostheses with XLPE (HR = 1.08 [95% CI, 0.88 to 1.32]; p = 0.481). CONCLUSIONS Minimally stabilized total knee prostheses with NXLPE bearing surfaces and posterior stabilized total knee prostheses, irrespective of bearing type, had a greater long-term revision risk for periprosthetic infection when compared with the revision risk for minimally stabilized total knee prostheses with XLPE bearing surfaces. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of Levels of Evidence.
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Affiliation(s)
- Christopher J Vertullo
- Knee Research Australia, Benowa, Queensland, Australia.,Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Richard N de Steiger
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Peter L Lewis
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Michelle Lorimer
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Yi Peng
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Stephen E Graves
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
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Abstract
BACKGROUND The Medicare Access and CHIP Reauthorization Act of 2015 provides the framework to link reimbursement for providers based on outcome metrics. Concerns exist that the lack of risk adjustment for patients undergoing revision TKA for an infection may cause problems with access to care. QUESTIONS/PURPOSES (1) After controlling for confounding variables, do patients undergoing revision TKA for infection have higher 30-day readmission, reoperation, and mortality rates than those undergoing revision TKA for aseptic causes? (2) Compared with patients undergoing revision TKA who are believed not to have infections, are patients undergoing revision for infected TKAs at increased risk for complications? METHODS We queried the American College of Surgeons National Surgical Quality Improvement Program database for patients undergoing revision TKA from 2012 to 2015 identified by Current Procedural Terminology (CPT) codes 27486, 27487, and 27488. Of the 10,848 patients identified, four were excluded with a diagnosis of malignancy (International Classification of Diseases, 9th Revision code 170.7, 170.9, 171.8, or 198.5). This validated, national database records short-term outcome data for inpatient procedures and does not rely on administrative coding data. Demographic variables, comorbidities, and outcomes were compared between patients believed to have infected TKAs and those undergoing revision for aseptic causes. A multivariate logistic regression analysis was performed to identify independent factors associated with complications, readmissions, reoperations, and mortality. RESULTS After controlling for demographic factors and medical comorbidities, TKA revision for infection was independently associated with complications (odds ratio [OR], 3.736; 95% confidence interval [CI], 3.198-4.365; p < 0.001), 30-day readmission (OR, 1.455; 95% CI, 1.207-1.755; p < 0.001), 30-day reoperation (OR, 1.614; 95% CI, 1.278-2.037; p < 0.001), and 30-day mortality (OR, 3.337; 95% CI, 1.213-9.180; p = 0.020). Patients with infected TKA had higher rates of postoperative infection (OR, 3.818; 95% CI, 3.082-4.728; p < 0.001), renal failure (OR, 36.709; 95% CI, 8.255-163.231; p < 0.001), sepsis (OR, 7.582; 95% CI, 5.529-10.397; p < 0.001), and septic shock (OR, 3.031; 95% CI, 1.376-6.675; p = 0.006). CONCLUSIONS Policymakers should be aware of the higher rate of mortality, readmissions, reoperations, and complications in patients with infected TKA. Without appropriate risk adjustment or excluding these patients all together from alternative payment and quality reporting models, fewer providers will be incentivized to care for patients with infected TKA. LEVEL OF EVIDENCE Level III, therapeutic study.
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Horriat S, Ayyad S, Thakrar RR, Haddad FS. Debridement, antibiotics and implant retention in management of infected total knee arthroplasty: A systematic review. ACTA ACUST UNITED AC 2018. [DOI: 10.1053/j.sart.2019.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Gomez-Urena EO, Tande AJ, Osmon DR, Berbari EF. Diagnosis of Prosthetic Joint Infection: Cultures, Biomarker and Criteria. Infect Dis Clin North Am 2018; 31:219-235. [PMID: 28483043 DOI: 10.1016/j.idc.2017.01.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Prosthetic joint infections (PJIs) are devastating complications after joint arthroplasty that continue to pose a diagnostic challenge. Currently, a single, stand-alone test with the adequate accuracy and reliability for diagnosis of PJI is not available; therefore, physicians who care for patients with PJI must rely on a combination of diagnostic tests for the diagnosis of PJI. This article reviews conventional laboratory test modalities, diagnostic accuracy and limitations of current tests, and novel emerging tests for the diagnosis of PJI.
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Affiliation(s)
- Eric O Gomez-Urena
- Division of Infectious Diseases, Mayo Clinic School of Medicine, 200 First Street Southwest, Rochester, MN 55905, USA.
| | - Aaron J Tande
- Division of Infectious Diseases, Mayo Clinic School of Medicine, 200 First Street Southwest, Rochester, MN 55905, USA
| | - Douglas R Osmon
- Division of Infectious Diseases, Mayo Clinic School of Medicine, 200 First Street Southwest, Rochester, MN 55905, USA
| | - Elie F Berbari
- Division of Infectious Diseases, Mayo Clinic School of Medicine, 200 First Street Southwest, Rochester, MN 55905, USA
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Arciola CR, Alvi FI, An YH, Campoccia D, Montanaro L. Implant Infection and Infection Resistant Materials: A Mini Review. Int J Artif Organs 2018; 28:1119-25. [PMID: 16353118 DOI: 10.1177/039139880502801109] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Implant infection is an aggressive, often irreducible post-surgical infection. It remains the primary cause of implant failure. Bacterial contamination during surgery and subsequent adhesion onto biomaterial surface of opportunistic microorganisms, such as staphylococcal species, exopolysaccharidic slimes or specific adhesins, initiates the implant infection. Pathogenesis of periprosthestic infection is the focus of studies aimed at developing infection resistant materials.
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Affiliation(s)
- C R Arciola
- Research Unit on Implant Infections, Rizzoli Orthopedic Institute, Bologna, Italy.
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28
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Presterl E, Lassnigg A, Parschalk B, Yassin F, Adametz H, Graninger W. Clinical Behavior of Implant Infections Due to Staphylococcus Epidermidis. Int J Artif Organs 2018; 28:1110-8. [PMID: 16353117 DOI: 10.1177/039139880502801108] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Surgical implants and other foreign material are increasingly used in modern medicine to restore or to improve the function of the human body. Infection of an implant is associated with considerable morbidity due to frequent hospitalizations, surgery and antimicrobial treatment. The underlying mechanism is the formation of a bacterial biofilm on the surface of the implanted body. The recognition and diagnosis of implant infections is essential for further therapy and, above all, the decision to remove and exchange the implant. Methods We compared the data of 60 patients with implant infections with those of 60 patients with transient bacteremia caused by Staphylococcus epidermidis. The pathogens isolated from blood were characterized with regard to antimicrobial susceptibility and formation of biofilms using a static microtiter plate model. Wild type skin isolates from non-hospitalized healthy volunteers served as control with regard to antimicrobial susceptibility and biofilm formation. Results Clinical signs and symptoms, underlying diseases and outcome were not different in either group. However, patients with implant infection had fever over a longer time (mean 12 days versus 3 days, respectively, p & 0.05) and more often positive blood cultures than patients with transient bacteremia (3.1 versus 1.2, p & 0.05). Thrombocytopenia was observed in patients with implant infections but not in patients with transient bacteremia (p & 0.05). Biofilms were formed in 86.4 % of the isolates in implant infection, in 88.8 % in transient bacteremia and in 76.9 % of the isolates from healthy volunteers (not significant). Multi-resistance to penicillin, oxacillin, erythromycin, clindamycin, ciprofloxacin and trimethoprim was more common in the hospital strains than in the wild type strains (75.6 % versus 48.7 %, p & 0.05). Conclusions The clinical features of implant infections are indistinguishable from those of transient bacteremia. Persisting fever and multiple blood culture yielding the growth of skin flora bacteria are strong indicators for infection of implanted material. Biofilm formation and antimicrobial multiresistance, as common in implant infection as in transient bacteremia, seem to be accessory factors in infections due to Staphylococcus epidermidis.
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Affiliation(s)
- E Presterl
- Department of Medicine I, Division of Infectious Diseases, Medical University of Vienna, Vienna, Austria.
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Vertullo CJ, Lewis PL, Peng Y, Graves SE, de Steiger RN. The Effect of Alternative Bearing Surfaces on the Risk of Revision Due to Infection in Minimally Stabilized Total Knee Replacement: An Analysis of 326,603 Prostheses from the Australian Orthopaedic Association National Joint Replacement Registry. J Bone Joint Surg Am 2018; 100:115-123. [PMID: 29342061 DOI: 10.2106/jbjs.17.00269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND The effect of alternative bearing materials on the risk of revision due to infection after total knee replacement remains uncertain. By reducing the immunomodulating polyethylene wear-particle burden and with different substrate bacterial adhesion properties, Oxinium oxidized zirconium and cross-linked polyethylene (XLPE) could alter infection risk. The purpose of the current study was to analyze the risk of revision for infection in 3 comparisons of bearing combinations. METHODS To evaluate the risk of revision for infection with XLPE, cobalt-chromium (CoCr) on XLPE was compared with CoCr on non-cross-linked polyethylene (NXLPE). To evaluate Oxinium, Oxinium-NXLPE was compared with CoCr-NXLPE, and to evaluate the possibility of an additional beneficial effect of Oxinium on XLPE, Oxinium-XLPE was compared with CoCr-XLPE. The cumulative percent revision (CPR) and hazard ratio (HR) for revision for infection in primary total knee replacement for osteoarthritis were determined from registry data from September 1, 1999, to December 31, 2015. Revisions within 6 months following the primary surgery were censored from the analysis, while procedures with posterior stabilized or fully stabilized total knee replacements as well as prostheses with a known higher risk of revision were excluded. Analyses were stratified by age, sex, and fixation type. RESULTS Of the 326,603 included primary total knee replacements, 1,511 (0.46%) were revised for infection. The risk of revision for infection was lower for CoCr-XLPE compared with CoCr-NXLPE (HR = 0.74; 95% confidence interval [CI] = 0.65 to 0.84; p < 0.001). This effect was apparent for both male and female patients overall, all fixation types, antibiotic cement use, those <65 years of age, and male patients ≥65 years of age. However, for female patients ≥65 years of age, there was no difference. Overall, Oxinium-NXLPE had the same revision risk as CoCr-NXLPE regardless of fixation; however, for cemented fixation, subanalysis showed a lower risk for Oxinium-NXLPE compared with CoCr-NXLPE (HR = 0.69; 95% CI = 0.51 to 0.94; p = 0.018). Oxinium-XLPE had the same revision risk for infection as CoCr-XLPE overall, among male patients, and when cemented fixation had been used. CONCLUSIONS In this registry analysis, CoCr-XLPE had a 26% lower risk of revision for infection than CoCr-NXLPE, suggesting a reduction of wear particle-induced immunomodulation with XLPE. Oxinium-XLPE had the same risk as CoCr-XLPE. Overall, Oxinium did not reduce the infection risk. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Christopher J Vertullo
- Knee Research Australia, Gold Coast, Queensland, Australia.,Menzies Health Institute, Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Peter L Lewis
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Yi Peng
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Stephen E Graves
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Richard N de Steiger
- Australian Orthopaedic Association National Joint Replacement Registry, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
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Cracking the case: should orthopaedic case carts be subjected to more stringent regulations? CURRENT ORTHOPAEDIC PRACTICE 2017. [DOI: 10.1097/bco.0000000000000548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Leary JT, Werger MM, Broach WH, Shaw LN, Santoni BG, Bernasek TL, Lyons ST. Complete Eradication of Biofilm From Orthopedic Materials. J Arthroplasty 2017; 32:2513-2518. [PMID: 28434696 DOI: 10.1016/j.arth.2017.03.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/13/2017] [Accepted: 03/21/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Interest exists in finding alternatives to current management strategies in periprosthetic joint infections, which typically include a 2-stage revision with placement of an antibiotic spacer and delayed placement of a new implant. We studied the efficacy of autoclaving, ultrasonication, and mechanical scrubbing for sterilization and biofilm eradication on infected cobalt-chrome discs. METHODS Strains of Staphylococcus aureus MRSA252 or Staphylococcus epidermidis RP62A were grown on the discs. For each strain, discs were divided into 5 groups (5 discs each) and exposed to several sterilization and biofilm eradication treatments: (1) autoclave, (2) autoclave + sonication, (3) autoclave + saline scrub, (4) autoclave + 4% chlorhexidine (CHC) scrub, and (5) autoclave + sonication + CHC scrub. Sterilization and biofilm eradication were quantified with crystal violet assays and scanning electron microscopy. RESULTS Relative to nontreated controls, autoclaving alone reduced biofilm load by 33.9% and 54.7% for MRSA252 and RP62A strains, respectively. Biofilm removal was maximized with the combined treatment of autoclaving and CHC scrub for MRSA252 (100%) and RP62A (99.5%). The addition of sonication between autoclaving and CHC scrubbing resulted in no statistically significant improvement in biofilm removal. High-resolution scanning electron microscopy revealed no cells or biofilm for this combined treatment. CONCLUSION Using 2 commonly encountered bacterial strains in periprosthetic joint infection, infected cobalt-chrome discs were sterilized and eradicated of residual biofilm with a combination of autoclaving and CHC scrubbing.
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Affiliation(s)
- Jeffrey T Leary
- Adult Reconstruction, Florida Orthopaedic Institute, Tampa, Florida
| | - Matthew M Werger
- Adult Reconstruction, Florida Orthopaedic Institute, Tampa, Florida
| | - William H Broach
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida
| | - Lindsey N Shaw
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida
| | - Brandon G Santoni
- Department of Research, Foundation for Orthopaedic Research and Education, Tampa, Florida
| | | | - Steven T Lyons
- Adult Reconstruction, Florida Orthopaedic Institute, Tampa, Florida
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George J, Klika AK, Navale SM, Newman JM, Barsoum WK, Higuera CA. Obesity Epidemic: Is Its Impact on Total Joint Arthroplasty Underestimated? An Analysis of National Trends. Clin Orthop Relat Res 2017; 475:1798-1806. [PMID: 28054327 PMCID: PMC5449322 DOI: 10.1007/s11999-016-5222-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Obesity is a well-established risk factor for total joint arthroplasty (TJA) and a number of complications including prosthetic joint infection. The annual changes in the prevalence of obesity among primary, revision, and infected TJA has not been studied at a national level. Given the higher costs of complications of TJA, it is important to understand the association of obesity with the annual trends of revision and infected TJA. QUESTIONS/PURPOSES (1) Is the prevalence of obesity increasing among patients undergoing THA/TKA? (2) Is the prevalence of obesity increasing among patients undergoing revision THA/TKA? (3) Is the prevalence of obesity increasing among patients with infected THA/TKA? METHODS Annual volumes of primary, revision, and infected THA and TKA from 1998 to 2011 were obtained from the Nationwide Inpatient Sample. Using mathematical equations, the prevalence of obesity was estimated from relative risks and national obesity prevalence. National obesity prevalence was obtained from public health sources and the relative risk estimates were obtained from previously published meta-analyses and population-based studies. Annual prevalence of obesity was obtained by dividing the number of obese primary/revision/infected procedures in each year by the total number of corresponding procedures in that year. Annual changes in the prevalence of obesity were analyzed using linear regression. RESULTS The prevalence of obesity is increasing among patients undergoing THA (1998: 60,264 of 154,337 [39%], 2011: 160,241 of 305,755 [52%], increase of 1.05%/year [confidence interval {CI}, 0.95%-1.15%], p < 0.001) and TKA (1998: 143,681 of 251,309 [57%], 2011: 448,712 of 644,243 [70%], increase of 0.97%/year [CI, 0.87%-1.07%], p < 0.001). There was an increasing prevalence of obesity with THA revisions (1998: 16,322 of 34,139 [48%], 2011: 33,304 of 54,453 [61%], increase of 1.04%/year [CI, 0.94%-1.15%], p < 0.001) and in TKA revisions (1998: 16,837 of 26,539 [63%], 2011: 52,151 of 69,632 [75%], increase of 0.89%/year [CI, 0.79%-0.99%], p < 0.001). There was an increasing prevalence of obesity with THA infections (1998: 2068 of 3018 [69%], 2011: 6856 of 8687 [79%], increase of 0.80%/year [CI, 0.71%-0.89%], p < 0.001) and in TKA infections (1998: 3563 of 4684 [76%], 2011: 14,178 of 16,774 [85%], increase of 0.65%/year [CI, 0.57%-0.73%], p < 0.001). CONCLUSIONS The prevalence of obesity has increased in patients undergoing primary, revision, and infected TJA in United States. The obesity epidemic appears to be related to the growing trends of revision and infection after TJA. With the obesity rates expected to grow further, the revision and infection burden associated with obesity may increase in the future. LEVEL OF EVIDENCE Level II, prognostic study.
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Affiliation(s)
- Jaiben George
- 0000 0001 0675 4725grid.239578.2Department of Orthopedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, A40, Cleveland, OH 44195 USA
| | - Alison K. Klika
- 0000 0001 0675 4725grid.239578.2Department of Orthopedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, A40, Cleveland, OH 44195 USA
| | - Suparna M. Navale
- 0000 0001 2164 3847grid.67105.35Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH USA
| | - Jared M. Newman
- 0000 0001 0675 4725grid.239578.2Department of Orthopedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, A40, Cleveland, OH 44195 USA
| | - Wael K. Barsoum
- 0000 0001 0675 4725grid.239578.2Department of Orthopedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, A40, Cleveland, OH 44195 USA
| | - Carlos A. Higuera
- 0000 0001 0675 4725grid.239578.2Department of Orthopedic Surgery, Cleveland Clinic, 9500 Euclid Avenue, A40, Cleveland, OH 44195 USA
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The Effect of Absorbable Calcium Sulfate on Wear Rates in Ultra-high-Molecular-weight Polyethylene: Potential Implications for Its Use in Treating Arthroplasty Infections. J Am Acad Orthop Surg 2017; 25:e114-e120. [PMID: 28475496 DOI: 10.5435/jaaos-d-16-00310] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION Patients, hospitals, and healthcare systems incur substantial burdens when infections result in total joint revisions. One potential solution to mitigate some of these burdens may be to transition from a two-stage infection treatment to a single-stage procedure. Off-label use of an absorbable calcium sulfate antibiotic carrier has been implemented in single-stage and two-stage procedures globally, with the goal of moving toward more single-stage revisions in the United States. Adverse effects of calcium sulfate on the joint space during articulation are currently unknown. METHODS This study aims to determine the impact of calcium sulfate beads on wear of polyethylene during and following exposure. Two phases of in vitro pin-on-disk testing were conducted. The first phase exposed polyethylene pins to calcium sulfate for 500,000 cycles of a 2-million cycle test. The second phase examined the wear of pins that were created from retrieved components exposed to calcium sulfate in vivo. RESULTS No clinically significant difference was observed between the wear rates of the calcium sulfate-exposed polyethylene pins and the control polyethylene pins. DISCUSSION Preliminary results suggest that a substantial increase in the wear rate of polyethylene is not expected with the addition of calcium sulfate beads during treatment of infection.
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Excess Length of Stay Attributable to Surgical Site Infection Following Hip Replacement: A Nested Case-Control Study. Infect Control Hosp Epidemiol 2017. [DOI: 10.1017/s0195941700075214] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Objective.We estimated the impact of hip replacement-associated surgical site infection (SSI) on morbidity and length of stay.Methods.This was a pairwise matched (1 : 1) case-control study nested in a cohort. All patients who underwent hip replacement from January 1, 2000, to June 30, 2004, were prospectively enrolled for the nested case-control design analysis and were monitored from the time of surgery until hospital discharge, including any patients readmitted because of infection.Results.Among the 1,260 hip replacements performed, 28 SSIs were detected, yielding a crude SSI rate of 2.2%. The median excess length of stay attributable to SSI was 32.5 days (P< .001), whereas the median prolonged postoperative stay due to SSI was 31 days (P< .001). Deep-wound SSI was the type that prolonged hospital stay the most (up to 49 days). Of the patients who developed an SSI, 4 required revision surgery, for an SSI-related morbidity rate of 14.3%.Conclusion.SSI prolongs hospital stay; however, although hospital stay is a rough indicator of the cost of this complication, to accurately estimate the costs of SSI, we would need to consider individual costs in a linear regression model adjusted for all possible confounding factors.
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35
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Abstract
Implant-associated infections remain a major issue in orthopaedics and antimicrobial functionalization of the implant surface by antibiotics or other anti-infective agents have gained interest. The goal of this article is to identify antimicrobial coatings, for which clinical data are available and to review their clinical need, safety profile, and their efficacy to reduce infection rates. PubMed database of the National Library of Medicine was searched for clinical studies on antimicrobial coated implants for internal fracture fixation devices and endoprostheses for bone surgery, for which study design, level of evidence, biocompatibility, development of resistance, and effectiveness to reduce infection rates were analyzed. Four different coating technologies were identified: gentamicin poly(d, l-lactide) coating for tibia nails, one high (MUTARS®) and one low amount silver (Agluna) technology for tumor endoprostheses, and one povidone-iodine coating for titanium implants. There was a total of 9 published studies with 435 patients, of which 7 studies were case series (level IV evidence) and 2 studies were case control studies (level III evidence). All technologies were reported with good systemic and local biocompatibility, except the development of local argyria with blue to bluish grey skin discoloration after the use of silver MUTARS® megaendoprostheses. For the local use of gentamicin, there is contradictory data on the risk of emergence of gentamicin-resistance strains, a risk that does not seem to exist for silver and iodine based technologies. Regarding reduction of infection rates, one case control study showed a significant reduction of infection rates by Agluna silver coated tumor endoprostheses. Based on socio-economic data, there is a strong need for improvement of infection prevention and treatment strategies, including implant coatings, in fracture care, primary and revision arthroplasty, and bone tumor surgery. The reviewed gentamicin, silver Agluna, and povidone-iodine technologies have shown a good risk benefit ratio for patients. Further data from randomized control trials are desirable, although this will remain challenging in the context of infection prevention due to the required large sample size of such studies.
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Affiliation(s)
- Volker Alt
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Giessen-Marburg, Campus Giessen, Rudolf-Buchheim-Str. 7, Germany.
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36
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Marothi DP, Sharma V, Sheth AN, Shah VI, Bharath L, Pachore JA. Management of Infected Total Knee Arthroplasty by a New Innovative Customized Articulating Knee Spacer: An Early Experience. J Orthop Case Rep 2017; 6:20-22. [PMID: 28164047 PMCID: PMC5288616 DOI: 10.13107/jocr.2250-0685.552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION Management of infected total knee arthroplasty (TKA) is a challenge to patient and surgeon alike. Two-stage exchange is the universally acclaimed method to tackle this problem. Various spacer devices are available for the first stage surgery for local delivery of antibiotics. Here, we report our experience with management of infected TKA patients with our indigenously designed and produced knee spacer. CASE REPORT Between 2012 and 2013, 28 patients with infected total knee replacement (TKR) have been managed by our indigenous knee spacer. Minimal spacer-related complications and a stable knee joint with range of motion up to 100° were noted in these patients. After a mean period of 6-8 weeks, the spacer was removed and definitive TKR fixation done. At a mean follow-up of 4-months post second stage definitive surgery, patients were infection free with no evidence of recurrence of infection. CONCLUSION Our new innovative customized articulating knee spacer, which has intramedullary stem extension, has potential to significantly reduce spacer-related complications along with providing improved knee function.
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Affiliation(s)
- Dhiraj P Marothi
- Department of Orthopaedics, Dr. RPGMCH, Kangra, Himachal Pradesh, India
| | - Vipin Sharma
- Department of Orthopaedics, Dr. RPGMCH, Kangra, Himachal Pradesh, India
| | - Ashish N Sheth
- Department of Arthroplasty, Shalby Hospital, Ahmedabad, Gujarat, India
| | - Vikram I Shah
- Department of Arthroplasty, Shalby Hospital, Ahmedabad, Gujarat, India
| | - L Bharath
- Department of Arthroplasty, Shalby Hospital, Ahmedabad, Gujarat, India
| | - J A Pachore
- Department of Arthroplasty, Shalby Hospital, Ahmedabad, Gujarat, India
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Drexler M, Dwyer T, Kuzyk PRT, Kosashvilli Y, Abolghasemian M, Regev GJ, Kadar A, Rutenberg TF, Backstein D. The results of two-stage revision TKA using Ceftazidime-Vancomycin-impregnated cement articulating spacers in Tsukayama Type II periprosthetic joint infections. Knee Surg Sports Traumatol Arthrosc 2016; 24:3122-3130. [PMID: 26272061 DOI: 10.1007/s00167-015-3753-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 08/07/2015] [Indexed: 11/24/2022]
Abstract
PURPOSE This study examined the success and factors associated with failure, of using cement spacers impregnated with high-dose Ceftazidime and Vancomycin when performing two-stage revision for infected total knee arthroplasty (TKA). METHODS A retrospective analysis was performed using a prospectively collected database of 82 patients (median age 68 years, range 39-87) with a confirmed deep TKA infection treated with a two-stage revision. All cement spacers were impregnated with high-dose Ceftazidime and Vancomycin. The rate of success was recorded-an association between failure of treatment, and patient factors, previous surgical treatment, and microbial characteristics was sought. RESULTS The mean time to infection from index arthroplasty was 45 months (range 3-240). The initial two-stage revision was successful in 70/82 patients (85.4 %), who remained free of infection at average follow-up of 36.2 months (range 24-85). A second two-stage revision for infection was required in 12/82 patients (14.6 %), which was successful in 4/12 (33 %). A third two-stage revision was performed in three patients, all of whom had a polymicrobial infection of which only one patient had successful eradication of infection. Recurrent infection was correlated with irrigation and debridement with implant retention prior to initial two-stage revision (p < 0.01), polymicrobial infections (p = 0.035), and infections presenting <6 months after index surgery (p = 0.031). No correlation was seen with age, BMI, type of organism, diabetes mellitus, or Charlson Comorbidity Index. CONCLUSION The findings of this study suggest that the combination of Ceftazidime and Vancomycin in cement spacers is as efficacious as other published single or combined antibiotic mixtures, which is clinically relevant to clinicians treating this difficult problem in the setting of patients with compromised renal function.
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Affiliation(s)
- Michael Drexler
- Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada.
| | - Tim Dwyer
- Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada
| | - Paul R T Kuzyk
- Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada
| | - Yona Kosashvilli
- Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada
| | | | - Gilad J Regev
- Tel-Aviv Sourasky Medical Center, Tel Aviv University, Waitzman 6 St, 6423906, Tel Aviv, Israel
| | - Assaf Kadar
- Tel-Aviv Sourasky Medical Center, Tel Aviv University, Waitzman 6 St, 6423906, Tel Aviv, Israel
| | - Tal Frenkel Rutenberg
- Tel-Aviv Sourasky Medical Center, Tel Aviv University, Waitzman 6 St, 6423906, Tel Aviv, Israel
| | - David Backstein
- Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada
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Predictors of Staphylococcus aureus Colonization and Results after Decolonization. Interdiscip Perspect Infect Dis 2016; 2016:4367156. [PMID: 27528869 PMCID: PMC4977396 DOI: 10.1155/2016/4367156] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/22/2016] [Indexed: 11/18/2022] Open
Abstract
Protocols for the screening and decolonization of Staphylococcus aureus prior to total joint arthroplasty (TJA) have become widely adopted. The goals of this study were to determine: (1) whether implementation of a screening protocol followed by decolonization with mupirocin/vancomycin and chlorhexidine reduces the risk of revision compared with no screening protocol (i.e., chlorhexidine alone) and (2) whether clinical criteria could reliably predict colonization with MSSA and/or MRSA. Electronic medical records of primary patients undergoing TJA that were screened (n = 3,927) and were not screened (n = 1,751) for Staphylococcus aureus at least 4 days prior to surgery, respectively, were retrospectively reviewed. All patients received chlorhexidine body wipes preoperatively. Patients carrying MSSA and MRSA were treated preoperatively with mupirocin and vancomycin, respectively, along with the standard preoperative antibiotics and chlorhexidine body wipes. Screened patients were 50% less likely to require revision due to prosthetic joint infection compared to those not screened (p = 0.04). Multivariate regression models were poorly accurate in predicting colonization with MSSA (AUC = 0.58) and MRSA (AUC = 0.62). These results support the routine screening and decolonization of S. aureus prior to TJA.
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McConda DB, Karnes JM, Hamza T, Lindsey BA. A novel co-culture model of murine K12 osteosarcoma cells and S. aureus on common orthopedic implant materials: 'the race to the surface' studied in vitro. BIOFOULING 2016; 32:627-634. [PMID: 27142312 DOI: 10.1080/08927014.2016.1172572] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/25/2016] [Indexed: 06/05/2023]
Abstract
Infection is a major cause of orthopedic implant failure. There are few studies assessing both tissue cell and bacterial adherence on common orthopedic implant materials in a co-culture environment. An in vitro co-culture model was created using K12 osteosarcoma cells and Staphylococcus aureus in a medium incubated over metal disks for 48 h. The results showed that, in the presence of S. aureus, there were fewer osteosarcoma cells attached to the disks for all substrata tested. There were significantly more osteosarcoma cells adhering to the cobalt chrome than the stainless steel and titanium disks. Overall, in the presence of osteosarcoma cells, there were more bacteria adhering to the disks for all the substrata tested, with significantly more bacteria adhering to the stainless steel disks compared to cobalt chrome and titanium disks. Scanning electron microscopy verified that osteosarcoma cells and bacteria were adherent to the metal disks after incubation for 48 h. Furthermore, the observation that more bacteria were in the co-culture than in the control sample suggests that the osteosarcoma cells serve as a nutrient source for the bacteria. Future models assessing the interaction of osteogenic cells with bacteria on a substratum would be improved if the model accounted for the role of the immune system in secondary bone healing.
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Affiliation(s)
- David B McConda
- a Department of Orthopaedics , West Virginia University , Morgantown , WV , USA
| | - Jonathan M Karnes
- a Department of Orthopaedics , West Virginia University , Morgantown , WV , USA
| | - Therwa Hamza
- a Department of Orthopaedics , West Virginia University , Morgantown , WV , USA
| | - Brock A Lindsey
- a Department of Orthopaedics , West Virginia University , Morgantown , WV , USA
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Kulkarni K, Karssiens T, Kumar V, Pandit H. Obesity and osteoarthritis. Maturitas 2016; 89:22-8. [DOI: 10.1016/j.maturitas.2016.04.006] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 04/08/2016] [Indexed: 01/23/2023]
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Kapadia BH, Banerjee S, Cherian JJ, Bozic KJ, Mont MA. The Economic Impact of Periprosthetic Infections After Total Hip Arthroplasty at a Specialized Tertiary-Care Center. J Arthroplasty 2016; 31:1422-6. [PMID: 26948176 DOI: 10.1016/j.arth.2016.01.021] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 01/06/2016] [Accepted: 01/12/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Periprosthetic infections after total hip arthroplasty represent an increased risk for patient morbidity and mortality, and an increased economic burden. The purpose of this study was to compare a group of patients who had periprosthetic infections after total hip arthroplasty to a matched group of patients who underwent primary total hip arthroplasty in terms of the associated costs, length of hospitalization, and number of readmissions (within 1 year). METHODS Between 2007 and 2011, 16 consecutive infected patients were matched to 32 noninfected patients (1:2 ratio). RESULTS The mean episode cost, length of hospitalization, and median readmissions was significantly higher in the infected group when compared to the matched cohort: $88,623 vs $25,659, 7.6 vs 3.29 days, and 2 vs 0, respectively. CONCLUSION Periprosthetic infections after THA resulted in an increased episode cost by approximately 3-fold, mean hospitalization period 2-fold, and led to a higher median number of readmissions.
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Affiliation(s)
- Bhaveen H Kapadia
- Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, Baltimore, Maryland
| | - Samik Banerjee
- Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, Baltimore, Maryland
| | - Jeffrey J Cherian
- Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, Baltimore, Maryland
| | - Kevin J Bozic
- Department of Orthopaedics, Dell Medical School, University of Texas At Austin, Austin, Texas
| | - Michael A Mont
- Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, Baltimore, Maryland
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Monge Jodra V, Sainz de Los Terreros Soler L, Diaz-Agero Perez C, Saa Requejo CM, Plana Farras N. Excess Length of Stay Attributable to Surgical Site Infection Following Hip Replacement: A Nested Case-Control Study. Infect Control Hosp Epidemiol 2016; 27:1299-303. [PMID: 17152026 DOI: 10.1086/509828] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Accepted: 05/15/2006] [Indexed: 11/03/2022]
Abstract
Objective.We estimated the impact of hip replacement-associated surgical site infection (SSI) on morbidity and length of stay.Methods.This was a pairwise matched (1 : 1) case-control study nested in a cohort. All patients who underwent hip replacement from January 1, 2000, to June 30, 2004, were prospectively enrolled for the nested case-control design analysis and were monitored from the time of surgery until hospital discharge, including any patients readmitted because of infection.Results.Among the 1,260 hip replacements performed, 28 SSIs were detected, yielding a crude SSI rate of 2.2%. The median excess length of stay attributable to SSI was 32.5 days (P< .001), whereas the median prolonged postoperative stay due to SSI was 31 days (P< .001). Deep-wound SSI was the type that prolonged hospital stay the most (up to 49 days). Of the patients who developed an SSI, 4 required revision surgery, for an SSI-related morbidity rate of 14.3%.Conclusion.SSI prolongs hospital stay; however, although hospital stay is a rough indicator of the cost of this complication, to accurately estimate the costs of SSI, we would need to consider individual costs in a linear regression model adjusted for all possible confounding factors.
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Brimmo O, Ramanathan D, Schiltz NK, Pillai ALPC, Klika AK, Barsoum WK. Irrigation and Debridement Before a 2-Stage Revision Total Knee Arthroplasty Does Not Increase Risk of Failure. J Arthroplasty 2016; 31:461-4. [PMID: 26421600 PMCID: PMC4602407 DOI: 10.1016/j.arth.2015.08.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 08/18/2015] [Accepted: 08/31/2015] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Studies have suggested that the success of 2-stage revision total knee arthroplasty (rTKA) may be compromised by a prior failed irrigation and debridement (I&D). The purpose of this study was to use 2 large state inpatient databases to compare the 2-stage rTKA failure rates for those patients with and without a prior I&D. METHODS This retrospective, longitudinal study used inpatient discharge data from the State Inpatient Database of 2 states (California and New York) from 2005 to 2011. A combination of International Classification of Diseases, Ninth Revision, diagnosis and procedure codes was used to identify rTKA patients and compare failure rates for rTKA patients with and without prior I&D. The primary outcome was failure of the staged revision, which was defined as subsequent surgery due to infection within 4 years of the 2-stage rTKA. RESULTS Of the 750 patients who underwent 2-stage rTKA, 57 had undergone a prior I&D. In all, 126 patients failed rTKA. After 4 years, the estimated failure rate was 8.7% (95% confidence interval [CI], 1.9%-16.9%) in the group with prior I&D and 17.5% (95% CI, 14.7%-20.4%) in the group without prior I&D. After adjusting for sex, race, insurance, median household income, and comorbidities, the hazard ratio for the group with a failed I&D was 0.49 (P = .122; 95% CI, 0.20-1.20), which indicated a lower risk of failure compared to the group without prior I&D. CONCLUSION These findings indicate that the failure rate of 2-stage rTKA is not increased by prior failed I&D.
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Affiliation(s)
- Olubusola Brimmo
- Cleveland Clinic, Department of Orthopaedic Surgery, Cleveland, OH
| | | | - Nicholas K Schiltz
- Case Western Reserve University, Department of Epidemiology & Biostatistics, Cleveland, OH
| | | | - Alison K Klika
- Cleveland Clinic, Department of Orthopaedic Surgery, Cleveland, OH
| | - Wael K Barsoum
- Cleveland Clinic, Department of Orthopaedic Surgery, Cleveland, OH
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Zahar A, Kendoff DO, Klatte TO, Gehrke TA. Can Good Infection Control Be Obtained in One-stage Exchange of the Infected TKA to a Rotating Hinge Design? 10-year Results. Clin Orthop Relat Res 2016; 474:81-7. [PMID: 26100256 PMCID: PMC4686525 DOI: 10.1007/s11999-015-4408-5] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Prosthetic joint infection (PJI) occurs in 1% to 2% of total knee arthroplasties (TKAs). Although two-stage exchange is the preferred management method of patients with chronic PJI in TKA in North America, one-stage exchange is an alternative treatment method, but long-term studies of this approach have not been conducted. QUESTIONS/PURPOSES We reviewed our minimum 9-year results of 70 patients who underwent one-stage exchange arthroplasty with a rotating hinge design to determine: (1) What was the proportion of patients free of infection? (2) What was the patient rate of survival free of any reoperation? (3) What were the clinical outcomes as measured by Hospital for Special Surgery scores? (4) What proportion of patients developed radiographic evidence of loosening? METHODS All one-stage revision TKAs for infection between January 1 and December 31, 2002, with a minimum 9-year followup (mean, 10 years; range, 9-11 years), in which patients had been seen within the last 1 year, were included in this retrospective review. During that period, 11 patients with infected TKAs were treated with other approaches (including two-stage approaches in eight); the general indication for one-stage revision was the diagnosis of PJI with a known causative organism. Exclusion criteria were culture-negative preoperative aspiration, known allergy to local antibiotics or bone cement, or cases in which radical débridement was impossible as a result of the involvement of important anatomical structures. Eighty-one patients with PJI were seen during this period; 70 underwent one-stage exchange using our strict protocol and were reimplanted with a rotating hinge TKA. Eleven patients (15.7%) were lost to followup. Hospital for Special Surgery scores were recorded and all radiographs were evaluated for prosthetic loosening. Failure was defined as revision surgery for infection or any other cause. RESULTS Our 10-year infection-free survival was 93% (mean, 4.1; 95% confidence interval [CI], 89%-96%; p < 0.007); and the patient 10-year survival rate free of revision for other causes was 91% (mean, 5.2; 95% CI, 86%-95%; p < 0.002). Mean Hospital for Special Surgery knee score at last followup was 69.6 (± 22.5 SD; range, 22-100) and the mean improvement in Hospital for Special Surgery knee score from preoperative to most recent followup was 35 (± 24.2 SD; range, 13-99). Evidence of radiographic loosening was seen in 11 patients at last followup, whereby in six patients, there was need for revision surgery. CONCLUSIONS Our study results showed an overall infection control rate of 93% and good clinical results using our one-stage approach, which combines aggressive débridement of the collateral ligaments and posterior capsule with a rotating hinge implant. These results are comparable with two-stage techniques at a followup of 10 years; further research into one-stage exchange techniques for PJI in TKA appears warranted. LEVEL OF EVIDENCE Level IV, therapeutic study.
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Affiliation(s)
- Akos Zahar
- />Center for Septic Surgery, Helios ENDO Klinik, Holstenstr. 2, 22767 Hamburg, Germany
| | - Daniel O. Kendoff
- />Center for Septic Surgery, Helios ENDO Klinik, Holstenstr. 2, 22767 Hamburg, Germany
| | - Till O. Klatte
- />Department of Trauma-, Hand- and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten A. Gehrke
- />Center for Septic Surgery, Helios ENDO Klinik, Holstenstr. 2, 22767 Hamburg, Germany
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Sakellariou VI, Savvidou O, Markopoulos C, Drakou A, Mavrogenis AF, Papagelopoulos PJ. Combination of Calcium Hydroxyapatite Antibiotic Carrier with Cement Spacers in Peri-Prosthetic Knee Infections. Surg Infect (Larchmt) 2015; 16:748-54. [DOI: 10.1089/sur.2014.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Vasileios I. Sakellariou
- 1st Department of Orthopaedics, Athens University Medical School, General University Hospital Attikon, Haidari, Greece
| | - Olga Savvidou
- 1st Department of Orthopaedics, Athens University Medical School, General University Hospital Attikon, Haidari, Greece
| | - Christos Markopoulos
- 1st Department of Orthopaedics, Athens University Medical School, General University Hospital Attikon, Haidari, Greece
| | - Androniki Drakou
- 1st Department of Orthopaedics, Athens University Medical School, General University Hospital Attikon, Haidari, Greece
| | - Andreas F. Mavrogenis
- 1st Department of Orthopaedics, Athens University Medical School, General University Hospital Attikon, Haidari, Greece
| | - Panayiotis J. Papagelopoulos
- 1st Department of Orthopaedics, Athens University Medical School, General University Hospital Attikon, Haidari, Greece
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Thakore RV, Greenberg SE, Shi H, Foxx AM, Francois EL, Prablek MA, Nwosu SK, Archer KR, Ehrenfeld JM, Obremskey WT, Sethi MK. Surgical site infection in orthopedic trauma: A case-control study evaluating risk factors and cost. J Clin Orthop Trauma 2015; 6:220-6. [PMID: 26566333 PMCID: PMC4600831 DOI: 10.1016/j.jcot.2015.04.004] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 04/24/2015] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND With the shift of our healthcare system toward a value-based system of reimbursement, complications such as surgical site infections (SSI) may not be reimbursed. The purpose of our study was to investigate the costs and risk factors of SSI for orthopedic trauma patients. METHODS Through retrospective analysis, 1819 patients with isolated fractures were identified. Of those, 78 patients who developed SSIs were compared to 78 uninfected control patients. Patients were matched by fracture location, type of fracture, duration of surgery, and as close as possible to age, year of surgery, and type of procedure. Costs for treatment during primary hospitalization and initial readmission were determined and potential risk factors were collected from patient charts. A Wilcoxon test was used to compare the overall costs of treatment for case and control patients. Costs were further broken down into professional fees and technical charges for analysis. Risk factors for SSIs were analyzed through a chi-squared analysis. RESULTS Median cost for treatment for patients with SSIs was $108,782 compared to $57,418 for uninfected patients (p < 0.001). Professional fees and technical charges were found to be significantly higher for infected patients. No significant risk factors for SSIs were determined. CONCLUSIONS Our findings indicate the potential for financial losses in our new healthcare system due to uncompensated care. SSIs nearly double the cost of treatment for orthopedic trauma patients. There is no single driver of these costs. Reducing postoperative stay may be one method for reducing the cost of treating SSIs, whereas quality management programs may decrease risk of infection.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Manish K. Sethi
- The Vanderbilt Orthopaedic Institute Center for Health Policy, Vanderbilt University, Suite 4200, South Tower, MCE, Nashville, TN 37221, United States
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Systematic review and meta-analysis of randomized controlled trials of antibiotics and antiseptics for preventing infection in people receiving primary total hip and knee prostheses. Antimicrob Agents Chemother 2015; 59:6696-707. [PMID: 26259793 PMCID: PMC4604400 DOI: 10.1128/aac.01331-15] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/31/2015] [Indexed: 12/23/2022] Open
Abstract
Infection rates in primary (first-time) major joint arthroplasty continue to be a significant issue. The effect of antibiotic and antiseptic prophylaxis on outcomes for this type of surgery has not been adequately reviewed. A systematic search of the main databases for randomized controlled trials (RCTs) evaluating antibiotics and antiseptics was conducted to evaluate the predetermined endpoints of infection, adverse events, costs, quality of life, and concentration levels of antibiotics. A meta-analysis using pooled effect estimates and fixed-effect and random-effect models of risk ratios (RR), calculated with 95% confidence intervals (CI), was utilized. Thirty (30) RCTs examined the effects of antibiotic and antiseptic prophylaxis on infections after primary total hip arthroplasty (THA) (total of 11,597 participants) and total knee arthroplasty (TKA) (total of 6,141 participants). For THA, preoperative systemic intravenous (i.v.) antibiotic prophylaxis may be effective in reducing the incidence of infection after THA from 6 months to ≥5 years. For TKA, there is no RCT evidence that antibiotics and/or antiseptics have any effect on infection rate. Preoperative systemic antibiotic prophylaxis in primary THA may be effective at reducing infection rate. There is no evidence that timing, route of administration, or concentration levels have an effect on reducing infections, adverse events, or costs in THA or TKA. Many of the trials included in this study were published in the 1980s and 1990s. Thus, it would be important to replicate a number of them based on current patient demographics and incidence of bacterial resistance.
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Darouiche RO, Mosier MC, Voigt J. Antibiotics and antiseptics for preventing infection in people receiving primary total joint prostheses. Hippokratia 2015. [DOI: 10.1002/14651858.cd010363.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rabih O Darouiche
- Baylor College of Medicine; Center for Prostheses Infection; 1333 Moursund Ave, Suite A221 Houston Texas USA 77030
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Arduino JM, Kaye KS, Reed SD, Peter SA, Sexton DJ, Chen LF, Hardy NC, Tong SY, Smugar SS, Fowler VG, Anderson DJ. Staphylococcus aureus infections following knee and hip prosthesis insertion procedures. Antimicrob Resist Infect Control 2015; 4:13. [PMID: 28428876 PMCID: PMC5395892 DOI: 10.1186/s13756-015-0057-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/07/2015] [Indexed: 12/23/2022] Open
Abstract
Background Staphylococcus aureus is the most common and most important pathogen following knee and hip arthroplasty procedures. Understanding the epidemiology of invasive S. aureus infections is important to quantify this serious complication. Methods This nested retrospective cohort analysis included adult patients who had undergone insertion of knee or hip prostheses with clean or clean-contaminated wound class at 11 hospitals between 2003–2006. Invasive S. aureus infections, non-superficial incisional surgical site infections (SSIs) and blood stream infections (BSIs), were prospectively identified following each procedure. Prevalence rates, per 100 procedures, were estimated. Results 13,719 prosthetic knee (62%) and hip (38%) insertion procedures were performed. Of 92 invasive S. aureus infections identified, SSIs were more common (80%) than SSI and BSI (10%) or BSI alone (10%). The rate of invasive S. aureus infection/100 procedures was 0.57 [95% CI: 0.43-0.73] for knee insertion and 0.83 [95% CI: 0.61-1.08] for hip insertion. More than half (53%) were methicillin-resistant. Median time-to-onset of infection was 34 and 26 days for knee and hip insertion, respectively. Infection was associated with higher National Healthcare Safety Network risk index (p ≤ 0.0001). Conclusions Post-operative invasive S. aureus infections were rare, but difficult-to-treat methicillin-resistant infections were relatively common. Optimizing preventative efforts may greatly reduce the healthcare burden associated with S. aureus infections.
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Affiliation(s)
| | | | | | | | | | - Luke F Chen
- Duke University Medical Center, Durham, NC USA
| | | | - Steven Yc Tong
- Duke University Medical Center, Durham, NC USA.,Menzies School of Health Research, Darwin, Northern Territory Australia
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