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Lora-Tamayo J, Mancheño-Losa M, Meléndez-Carmona MÁ, Hernández-Jiménez P, Benito N, Murillo O. Appropriate Duration of Antimicrobial Treatment for Prosthetic Joint Infections: A Narrative Review. Antibiotics (Basel) 2024; 13:293. [PMID: 38666969 PMCID: PMC11047716 DOI: 10.3390/antibiotics13040293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/16/2024] [Accepted: 03/19/2024] [Indexed: 04/29/2024] Open
Abstract
Prosthetic joint infections are considered difficult to treat they needing aggressive surgery and long antimicrobial treatments. However, the exact duration of these therapies has been established empirically. In the last years, several studies have explored the possibility of reducing the length of treatment in this setting, with conflicting results. In this narrative review, we critically appraise the published evidence, considering the different surgical approaches (implant retention [DAIR] and one-step and two-step exchange procedures) separately. In patients managed with DAIR, usually treated for at least 12 weeks, a large, randomized trial failed to show that 6 weeks were non-inferior. However, another randomized clinical trial supports the use of 8 weeks, as long as the surgical conditions are favorable and antibiotics with good antibiofilm activity can be administered. In patients managed with a two-step exchange procedure, usually treated during 6 weeks, a randomized clinical trial showed the efficacy of a 4-week course of antimicrobials. Also, the use of local antibiotics may allow the use of even shorter treatments. Finally, in the case of one-step exchange procedures, there is a trend towards reducing the length of therapy, and the largest randomized clinical trial supports the use of 6 weeks of therapy.
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Affiliation(s)
- Jaime Lora-Tamayo
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación Biomédica imas12 Hospital 12 de Octubre, Facultad de Medicina, Universidad Complutense de Madrid, 28041 Madrid, Spain; (M.M.-L.); (P.H.-J.)
- Spanish Group for the Study of Bone and Joint Infections, Spanish Society of Clinical Microbiology and Infectious Diseases (GEIO-SEIMC), 28003 Madrid, Spain; (N.B.); (O.M.)
- CIBERINFEC—CIBER Enfermedades Infecciosas, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Mikel Mancheño-Losa
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación Biomédica imas12 Hospital 12 de Octubre, Facultad de Medicina, Universidad Complutense de Madrid, 28041 Madrid, Spain; (M.M.-L.); (P.H.-J.)
- Spanish Group for the Study of Bone and Joint Infections, Spanish Society of Clinical Microbiology and Infectious Diseases (GEIO-SEIMC), 28003 Madrid, Spain; (N.B.); (O.M.)
| | - María Ángeles Meléndez-Carmona
- Department of Microbiology, Hospital Universitario 12 de Octubre, Instituto de Investigación Biomédica imas12 Hospital 12 de Octubre, 28041 Madrid, Spain;
| | - Pilar Hernández-Jiménez
- Department of Internal Medicine, Hospital Universitario 12 de Octubre, Instituto de Investigación Biomédica imas12 Hospital 12 de Octubre, Facultad de Medicina, Universidad Complutense de Madrid, 28041 Madrid, Spain; (M.M.-L.); (P.H.-J.)
| | - Natividad Benito
- Spanish Group for the Study of Bone and Joint Infections, Spanish Society of Clinical Microbiology and Infectious Diseases (GEIO-SEIMC), 28003 Madrid, Spain; (N.B.); (O.M.)
- CIBERINFEC—CIBER Enfermedades Infecciosas, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Infectious Diseases Unit, Hospital de la Santa Creu i Sant Pau, Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
- UQ Centre for Clinical Research (UQCCR), The University of Queensland, Brisbane 4072, Australia
| | - Oscar Murillo
- Spanish Group for the Study of Bone and Joint Infections, Spanish Society of Clinical Microbiology and Infectious Diseases (GEIO-SEIMC), 28003 Madrid, Spain; (N.B.); (O.M.)
- CIBERINFEC—CIBER Enfermedades Infecciosas, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Infectious Diseases, Hospital Universitario Bellvitge, IDIBELL (Instituto de Investigación Biomédica de Bellvitge), 08908 L’Hospitalet de Llobregat, Spain
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Ebied A, Ebied AA, Badr IT, Affara M, Marie S. Cementless augmented versus cemented Dual Mobility cups: medium-term outcome of case series with a control group. BMC Musculoskelet Disord 2023; 24:97. [PMID: 36740673 PMCID: PMC9900940 DOI: 10.1186/s12891-023-06204-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 01/30/2023] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Post-operative dislocation and reconstruction of acetabular defects are two challenging topics in revision Total Hip Arthroplasty (rTHA). Cemented Dual Mobility (DM) cups on top of Kerboull Cross and bone graft have been successfully employed to overcome these challenges. The cementless augmented DM cups were recently introduced. In this study medium term results of the augmented cementless DM Coptos cups are reported and compared to the established technique of cemented DM cups and Kerboull plate. MATERIAL AND METHODS This is a retrospective analysis of data collected on patients who received rTHA using DM cups in the period between June 2015 and September 2020. Two groups of patients were identified. The first group received cementless augmented DM-cups (NOVAE® Coptos TH-SERF) (Coptos TH cup group). The second comparable group who had Kerboull ring (KE ring group) and cemented DM cups (NOVAE® STICK). Demographic data, surgical technique, functional and radiological outcome as well as complications during the follow-up visits are reported. RESULTS Forty-two patients with a mean age at the time of revision 48.8 ± 13.6 years. 29 patients received Coptos TH DM-cup, while 13 patients had Bone Graft (BG), KE ring and cemented DM cups for acetabular reconstruction. Acetabular defects were Paprosky types IIB and IIC in 31 patients and IIIA and B in 11 patients. The follow-up was 52.8 ± 21 months (mean ± STD); and the mean Harris Hip Score (HHS) at last visit was 91 ± 5. Good stability of all cups was reported. Full integration of the impaction graft was observed in 94% of the Coptos and 92% of the KE groups. One of the Coptos cups was readjusted and one case of single dislocation was recorded in the KE group. None of the DM cups in both groups was revised or awaiting revision. CONCLUSION Coptos TH cups achieve similar results to the cemented DM on KE ring at the medium term but long term outcome remains to be seen.
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Affiliation(s)
- Ayman Ebied
- grid.411775.10000 0004 0621 4712Department of Orthopedic Surgery, Menoufia University Faculty of Medicine, Shebin El-Kom, 32511 Menoufia, Egypt
| | - Ahmed Ali Ebied
- grid.411775.10000 0004 0621 4712Department of Orthopedic Surgery, Menoufia University Faculty of Medicine, Shebin El-Kom, 32511 Menoufia, Egypt
| | - Ismail Tawfeek Badr
- grid.411775.10000 0004 0621 4712Department of Orthopedic Surgery, Menoufia University Faculty of Medicine, Shebin El-Kom, 32511 Menoufia, Egypt
| | - Mostafa Affara
- grid.411775.10000 0004 0621 4712Department of Orthopedic Surgery, Menoufia University Faculty of Medicine, Shebin El-Kom, 32511 Menoufia, Egypt
| | - Sameh Marie
- grid.411775.10000 0004 0621 4712Department of Orthopedic Surgery, Menoufia University Faculty of Medicine, Shebin El-Kom, 32511 Menoufia, Egypt
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Tella GF, Donadono C, Castagnini F, Bordini B, Cosentino M, Di Liddo M, Traina F. Preoperative and postoperative risk factors for periprosthetic joint infection in primary total hip arthroplasty: A 1-year experience. World J Orthop 2022; 13:903-910. [PMID: 36312522 PMCID: PMC9610863 DOI: 10.5312/wjo.v13.i10.903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/27/2022] [Accepted: 09/10/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Periprosthetic joint infection (PJI) in primary total hip replacement (THR) is one of the most important threats in orthopedic surgery, so one important surgeon’s target is to avoid or early diagnose a PJI. Although the incidence of PJI is very low (0.69%) in our department, with an average follow-up of 595 d, this infection poses a serious threat due to the difficulties of treatment and the lower functional outcomes after healing.
AIM To study the incidence of PJI in all operations occurring in the year 2016 in our department to look for predictive signs of potential infection.
METHODS We counted 583 THR for 578 patients and observed only 4 cases of infection (0.69%) with a mean follow-up of 596 d (min 30, max 1451). We reviewed all medical records to collect the data: duration and time of the surgery, presence, type and duration of the antibiotic therapy, preoperative diagnosis, blood values before and after surgery, transfusions, presence of preoperative drugs (in particularly anticoagulants and antiaggregant, corticosteroids and immunosuppressants), presence of some comorbidities (high body mass index, blood hypertension, chronic obstructive pulmonary disease, cardiac ischemia, diabetes, rheumatological conditions, previous local infections).
RESULTS No preoperative, intraoperative, or postoperative analysis showed a higher incidence of PJI. We did not find any class with evident major odds of PJI. In our study, we did not find any border value to predict PJI and all patients had similar values in both groups (non-PJI and PJI). Only some categories, such as female patients, showed more frequency of PJI, but this difference related to sex was not statistically significant.
CONCLUSION We did not find any category with a higher risk of PJI in THR, probably due to the lack of few cases of infection.
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Affiliation(s)
- Giuseppe Ferdinando Tella
- Ortopedia-Traumatologia e Chirurgia protesica e dei reimpianti d'anca e di ginocchio, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
| | - Cesare Donadono
- Ortopedia-Traumatologia e Chirurgia protesica e dei reimpianti d'anca e di ginocchio, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
| | - Francesco Castagnini
- Ortopedia-Traumatologia e Chirurgia protesica e dei reimpianti d'anca e di ginocchio, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
| | - Barbara Bordini
- Laboratorio di Tecnologia Medica, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
| | - Monica Cosentino
- Laboratorio di Tecnologia Medica, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
| | - Michele Di Liddo
- Ortopedia-Traumatologia e Chirurgia protesica e dei reimpianti d'anca e di ginocchio, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
| | - Francesco Traina
- Ortopedia-Traumatologia e Chirurgia protesica e dei reimpianti d'anca e di ginocchio, IRCCS Istituto Ortopedico Rizzoli, Bologna 40125, Italy
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Periprosthetic Joint Infection (PJI)—Results of One-Stage Revision with Antibiotic-Impregnated Cancellous Allograft Bone—A Retrospective Cohort Study. Antibiotics (Basel) 2022; 11:antibiotics11030310. [PMID: 35326773 PMCID: PMC8944641 DOI: 10.3390/antibiotics11030310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 02/21/2022] [Accepted: 02/23/2022] [Indexed: 02/04/2023] Open
Abstract
Controversy exists regarding the optimal treatment of periprosthetic joint infection (PJI), considering control of infection, functional results as well as quality of life. Difficulties in treatment derive from the formation of biofilms within a few days after infection. Biofilms are tolerant to systemically applied antibiotics, requiring extreme concentrations for a prolonged period. Minimum biofilm eradicating concentrations (MBEC) are only feasible by the local application of antibiotics. One established approach is the use of allograft bone as a carrier, granting a sustained release of antibiotics in very high concentrations after appropriate impregnation. The purpose of this study was to determine the rate of reinfection after a one-stage revision of infected hip or knee prostheses, using antibiotic-impregnated allograft bone as the carrier and avoiding cement. Between 1 January 2004 and 31 January 2018, 87 patients with PJI, according to MSIS, underwent a one-stage revision with antibiotic-impregnated cancellous allograft bone. An amount of 17 patients had insufficient follow-ups. There were 70 remaining patients (34 male, 36 female) with a mean follow-up of 5.6 years (range 2–15.6) and with a mean age of 68.2 years (range 31.5–86.9). An amount of 38 hips and 11 knees were implanted without any cement; and 21 knees were implanted with moderate cementing at the articular surface with stems always being uncemented. Within 2 years after surgery, 6 out of 70 patients (8.6%, CI 2–15.1) showed reinfection and after more than 2 years, an additional 6 patients showed late-onset infection. Within 2 years after surgery, 11 out of 70 patients (15.7%, CI 7.2–24.2) had an implant failure for any reason (including infection) and after more than 2 years, an additional 7 patients had an implant failure. Using Kaplan-Meier analysis for all 87 patients, the estimated survival for reinfection was 93.9% (CI 88.8–99.1) at 1 year, 89.9% (CI 83.2–96.6) at 2 years and 81.5% (CI 72.1–90.9) at 5 years. The estimated survival for implant failure for any reason was 90.4% (CI 84.1–96.7) at 1 year, 80.9% (CI 72.2–89.7) at 2 years and 71.1% (CI 60.3–81.8) at 5 years. One-stage revision with antibiotic-impregnated cancellous allograft bone grants comparable results regarding infection control as with multiple stages, while shortening rehabilitation, improving quality of life for the patients and reducing costs for the health care system.
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Lum ZC, Holland CT, Meehan JP. Systematic review of single stage revision for prosthetic joint infection. World J Orthop 2020; 11:559-572. [PMID: 33362992 PMCID: PMC7745489 DOI: 10.5312/wjo.v11.i12.559] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/20/2020] [Accepted: 11/29/2020] [Indexed: 02/06/2023] Open
Abstract
While advanced technology, increased medical knowledge and improved surgical technique has improved patient outcomes in total joint arthroplasty, prosthetic joint infection still remains one of the leading causes of increased healthcare costs, medical resources and societal burdens in orthopaedic care. Two stage arthroplasty revision remains the gold standard for treatment of prosthetic joint infection. Proponents of single stage revision arthroplasty for infection argue that it results in lower healthcare costs while improving patient reported functional outcomes and with equivalent success rates. Here we review the history of single stage revision arthroplasty, discuss the key principles, highlight the indications and contraindications, and review the reported outcomes with a focus on future developments of single stage revision arthroplasty for hip and knee periprosthetic joint infections.
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Affiliation(s)
- Zachary C Lum
- Department of Orthopaedic Surgery, Davis Medical Center, University of California, Sacramento, CA 95817, United States
| | - Christopher Thomas Holland
- Department of Orthopaedics, University of California, Davis Medical Center, Sacramento, CA 95817, United States
| | - John P Meehan
- Department of Orthopaedics, University of California, Davis Medical Center, Sacramento, CA 95817, United States
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Erivan R, Lopez-Chicon P, Fariñas O, Perez Prieto D, Grau S, Boisgard S, Monllau JC, Vilarrodona A. Which type of bone releases the most vancomycin? Comparison of spongious bone, cortical powder and cortico-spongious bone. Cell Tissue Bank 2019; 21:131-137. [PMID: 31865504 DOI: 10.1007/s10561-019-09806-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/18/2019] [Indexed: 11/26/2022]
Abstract
Bone infections can be challenging to treat and can lead to several surgeries and relapses. When a graft is needed, cavitary bone loss can be grafted with cancellous or cortical bone. Both can be used for grafting. However, the antibiotic releasing capacity of these grafts has not been compared. Which type of bone is best at releasing the most antibiotic has not been well established. The aim of this study was to determine which type of bone is best for antibiotic release when the bone is suffused with antibiotics by the surgeon. The hypothesis is that there would be a difference between the type of bone tested due to different release capacities of cortical and cancellous bone. This was an experimental study. Cortical spongy bone in chips, Spongy bone in chips and demineralized cortical bone powder were compared. For each type of bone, 5 samples were tested. Processed and decontaminated grafts were freeze-dried to be kept at room temperature. The primary endpoint was the amount of vancomycin released by the graft as it affects the concentration of antibiotic around the graft in clinical practice. The procedure for the study consisted of full graft immersion in a vancomycin solution. Then, the liquid was removed with aspiration. In order to measure the quantity of antibiotic released, the bone was put into distilled water in agitation in a heated rocker at 37 °C. After 30 min of soaking, 1 mL of the liquid was removed. The same extraction process was also carried out after 60 min soaking, 2 h, 3 h, 24 h, and 48 h. No differences were found between each type of bone relative to the concentration of vancomycin released at each time of the assessment. There was a significant difference in the weight of the bone with a higher weight for the cortical powder (1.793 g) versus cortical spongy bone and spongy bone (1.154 g and 1.013 g) with a p value < 0.0001. A significant difference was seen in the weight of the bone with vancomycin after the aspiration of the liquid with 3.026 g for cortical powder, 2.140 g and 2.049 g for the cortical spongy bone and the spongy bone with a p value < 0.0001. In daily clinical practice, one can use cancellous bone, cortico-cancellous bone or cortical powder in order to add vancomycin to a bone graft. Our results show the release kinetics of the soaked allografts. With a maximum of 14 mg/mL in the first minutes and a rapid decrease it shows a pattern comparable to antibiotic loaded bone cement. The method used appears favourable for prophylactic use, protecting the graft against contamination at implantation, but is not sufficient for treating chronic bone infection. LEVEL OF EVIDENCE: V.
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Affiliation(s)
- Roger Erivan
- CNRS, SIGMA Clermont, ICCF, CHU Clermont-Ferrand, Université Clermont Auvergne, 63000, Clermont-Ferrand, France.
- Orthopedic and Trauma Surgery Department, Hôpital Gabriel Montpied, CHU de Clermont Ferrand, BP 69, 63003, Clermont-Ferrand, France.
| | | | - Oscar Fariñas
- Barcelona Tissue Bank, Banc de Sang I Teixits, Barcelona, Spain
| | | | - Santiago Grau
- ICATME- Hospital, Universitari Dexeus, Parc de Salut Mar, Barcelona, Spain
- Department of Pharmacy, Hospital del Mar, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - Stéphane Boisgard
- CNRS, SIGMA Clermont, ICCF, CHU Clermont-Ferrand, Université Clermont Auvergne, 63000, Clermont-Ferrand, France
- Orthopedic and Trauma Surgery Department, Hôpital Gabriel Montpied, CHU de Clermont Ferrand, BP 69, 63003, Clermont-Ferrand, France
| | - Juan C Monllau
- ICATME- Hospital, Universitari Dexeus, Parc de Salut Mar, Barcelona, Spain
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Enhancing biology and providing structural support for acetabular reconstruction in single-stage revision for infection. J Orthop Traumatol 2019; 20:23. [PMID: 31236707 PMCID: PMC6591340 DOI: 10.1186/s10195-019-0530-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 08/29/2018] [Indexed: 11/26/2022] Open
Abstract
Background Reconstruction of combined segmental and cavitary defects of the acetabulum is a challenge to the hip surgeon. One question regards the efficacy of reconstruction of acetabular defects using a combination of tantalum metal augments (TMAs) and impaction graft in single-stage revision for periprosthetic infection. Materials and methods In the period between July 2009 and August 2014, 24 patients with combined segmental and cavitary acetabular defects and Paprosky classification grade IIB, IIC, and IIIA had hips reconstructed using the combination of TMAs and antibiotic-loaded impaction grafting. A similar group of 30 patients who received single-stage revision without metal augments were identified and taken as control. All patients received a polyethylene cemented cup and long cementless (Wagner SL) stem. Patients were prospectively evaluated using the modified Harris Hip Score (HHS) in addition to radiological evaluation at 3, 6, and 12 months then annually thereafter. Results At an average follow-up period of 4 years (range 2–7 years), all but one patient in the study group were free of infection, indicating a 96% success rate. This rate of eradicating infection was comparable to the 97% success rate in the control group. All metal augments were stable, and good incorporation of the impacted bone graft was observed. The HHS improved significantly from 27 preoperatively to 83 postoperatively (P < 0.001). Conclusion Metal augments can convert massive acetabular defects to a more contained defect suitable for grafting. The combination of tantalum augments that provide strong structural support and antibiotic-loaded allograft is successful in the mid-term in single-stage revisions for infection. Level of evidence Level IV (prospective case series).
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Rowan FE, Donaldson MJ, Pietrzak JR, Haddad FS. The Role of One-Stage Exchange for Prosthetic Joint Infection. Curr Rev Musculoskelet Med 2018; 11:370-379. [PMID: 29987643 PMCID: PMC6105475 DOI: 10.1007/s12178-018-9499-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE OF REVIEW In an era of increasing numbers of hip and knee replacements, strategies to manage prosthetic joint infection (PJI) that are effective at infection control with good patient-reported outcomes and cost containment for health systems are needed. Interest in single-stage exchange for PJI is rising and we assess evidence from the last 5 years related to this treatment strategy. RECENT FINDINGS Only five series for total knee replacement and ten series for total hip replacement have been reported in the last five years. More review articles and opinion pieces have been written. Reinfection rates in these recent studies range from 0 to 65%, but a meta-analysis and systematic review of all studies showed a reinfection rate of 7.6% (95% CI 3.4-13.1) and 8.8% (95% CI 7.2-10.6) for single-stage and two-stage revisions respectively. There is emerging evidence to support single-stage revision in the setting of significant bony deficiency and atypical PJIs such as fungal infections. Prospective randomised studies are recruiting and are necessary to guide the direction of single-stage revision selection criteria. The onus of surgical excellence in mechanical removal of implants, necrotic tissue, and biofilms lies with the arthroplasty surgeon and must remain the cornerstone of treatment. Single-stage revision may be considered the first-line treatment for all PJIs unless the organism is unknown, the patient is systemically septic, or there is a poor tissue envelope.
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Affiliation(s)
- Fiachra E Rowan
- Department of Orthopaedic Surgery, University College London Hospital, 250 Euston Road, London, NW1 2PG, UK.
- The Princess Grace Hospital, 42-52 Nottingham Place, Marylebone, London, W1U 5NY, UK.
| | - Matthew J Donaldson
- Department of Orthopaedic Surgery, University College London Hospital, 250 Euston Road, London, NW1 2PG, UK
- The Princess Grace Hospital, 42-52 Nottingham Place, Marylebone, London, W1U 5NY, UK
| | - Jurek R Pietrzak
- Department of Orthopaedic Surgery, University College London Hospital, 250 Euston Road, London, NW1 2PG, UK
- The Princess Grace Hospital, 42-52 Nottingham Place, Marylebone, London, W1U 5NY, UK
| | - Fares S Haddad
- Department of Orthopaedic Surgery, University College London Hospital, 250 Euston Road, London, NW1 2PG, UK
- The Princess Grace Hospital, 42-52 Nottingham Place, Marylebone, London, W1U 5NY, UK
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