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Akkaya M, Akcaalan S, Perrone FL, Sandiford N, Gehrke T, Citak M. Organism profile and C-reactive protein (CRP) response are different in periprosthetic joint infection in patients with hepatitis. Arch Orthop Trauma Surg 2024; 144:341-346. [PMID: 37742285 DOI: 10.1007/s00402-023-05059-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 09/01/2023] [Indexed: 09/26/2023]
Abstract
PURPOSE Hepatitis B and C are important and relatively common health issues. It is known that many patients who underwent total knee and hip arthroplasty were also diagnosed with hepatitis. These patients are at higher risk of periprosthetic joint infection (PJI). This study aimed to investigate the differences in PJI cases in hepatitis B and C patients. METHODS This is a retrospective case-controlled single-center study. A total of 270 patients with hepatitis and non-hepatitis (control group) who underwent one-stage septic exchange to the hip and knee joints were included in the study. All patients' previous surgical histories, infective organisms, C-reactive protein (CRP) values before septic exchange, and demographic data were evaluated. All microbiological and laboratory evaluations were performed separately for knee and hip arthroplasty. RESULTS The mean CRP levels of Hep B- and C-positive patients, who underwent one-stage septic exchange in the knee joint, were 23.6 mg/L. In the control group, this value was 43.1 mg/L and a statistically significant difference was found between the groups (p = 0.004). Gram-negative organisms were identified in a larger proportion of patients with hepatitis who developed PJI in both hip and knee joints and underwent one-stage septic exchange (p = 0.041/p = 0.044). CONCLUSION PJIs caused by Gram-negative bacteria are encountered more frequently in patients with hepatitis than in the control group. In addition, the CRP rise is less in patients with hepatitis compared to PJI cases in the control group. Patient-specific evaluation is required in cases of PJI in patient groups with co-existing hepatitis.
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Affiliation(s)
- Mustafa Akkaya
- Department of Orthopaedic Surgery, Helios ENDO-Klinik, Holstenstr. 2, 22767, Hamburg, Germany
| | - Serhat Akcaalan
- Department of Orthopaedic Surgery, Helios ENDO-Klinik, Holstenstr. 2, 22767, Hamburg, Germany
| | - Fabio Luigi Perrone
- Department of Orthopaedic Surgery, Helios ENDO-Klinik, Holstenstr. 2, 22767, Hamburg, Germany
| | - Nemandra Sandiford
- Joint Reconstruction Unit, Southland Hospital, Invercargill, New Zealand
| | - Thorsten Gehrke
- Department of Orthopaedic Surgery, Helios ENDO-Klinik, Holstenstr. 2, 22767, Hamburg, Germany
| | - Mustafa Citak
- Department of Orthopaedic Surgery, Helios ENDO-Klinik, Holstenstr. 2, 22767, Hamburg, Germany.
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Xu X, Sun Q, Liu Y, Wang D, Diao S, Wang H, Gao Y, Lu T, Zhou J. Comparative Analysis of Eccentric Glenosphere in Reverse Total Shoulder Arthroplasty: A Computer Simulation Study. Int J Gen Med 2023; 16:4691-4704. [PMID: 37868817 PMCID: PMC10590075 DOI: 10.2147/ijgm.s426191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/16/2023] [Indexed: 10/24/2023] Open
Abstract
Objective The aim was to evaluate the effects of different glenosphere eccentricities on impingement, range of motion (ROM), and muscle length during standard activities in reverse total shoulder arthroplasty (RSA). Methods In this study, we utilized computational modeling techniques to create native shoulder and shoulder models undergoing RSA and simulate shoulder movements in all abduction-adduction, flexion-extension, and rotation. We tested a total of 36 different glenosphere configurations, which included three different inferior tilts (0°, +10°, +20°) and two different lateral offsets (0 mm and +4 mm), as well as six different glenosphere eccentricities (concentricity, inferior, posterior, anterior, anteroinferior, and posteroinferior). We evaluated the maximum impingement-free ROM, impingement sites, and muscle lengths. Results All glenosphere configurations exceeded 50% of native shoulder ROM in three planes and total global ROM. In abduction-adduction, there was no significant difference among the different glenosphere eccentricities (p > 0.05). In flexion-extension, the posteroinferior eccentricity had the maximum ROM among the different eccentricities, but no significant difference among the different glenosphere eccentricities (p > 0.05). In rotation, there was a significant difference overall, and anteroinferior eccentricity had a significant advantage over concentricity (p < 0.05). In total global ROM, anteroinferior eccentricity had a significant advantage over concentricity when lateral offset was 0 mm (p < 0.05). In all models of glenosphere eccentricities, only the elongation of the infraspinatus muscle was statistically significant (p < 0.05). Conclusion Glenosphere eccentricity significantly influenced rotation, total global ROM, and the length of the subscapularis muscle. Among them, anteroinferior offset achieved the maximum ROM in abduction-adduction, rotation, and total global activities. Both anteroinferior and inferior glenoid eccentricity showed significant advantages over the concentricity in rotation and total global ROM. Level of Evidence Basic Science Study; Computer Modeling.
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Affiliation(s)
- Xiaopei Xu
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Qingnan Sun
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Yang Liu
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Dong Wang
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Shuo Diao
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Hanzhou Wang
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Yuling Gao
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Tianchao Lu
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Junlin Zhou
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
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Xu X, Wang H, Liu Y, Wang D, Diao S, Gao Y, Zhou J. The Role of Combined Inflammatory Biomarkers in the Diagnosis of High- and Low-Virulence FRI Among High-Risk Lower Extremity Fractures. Int J Gen Med 2023; 16:3363-3371. [PMID: 37576914 PMCID: PMC10422992 DOI: 10.2147/ijgm.s426608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023] Open
Abstract
Objective The aim of this study is to evaluate the diagnostic accuracy of infection-related biomarkers in high-risk lower limb injury patients with fracture-related infection (FRI) caused by high-/low-virulence microorganisms. Methods This study was a retrospective analysis of patients with high-risk lower extremity fractures (including tibial plateau, calcaneus, and Pilon fractures) who underwent open reduction internal fixation (ORIF) surgery from January 2017 to February 2022. Peripheral blood samples were collected within 24 hours of admission, and the following information was evaluated: gender, age, BMI, smoking, comorbidities, injury information, surgical details, values for serum C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), as well as neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), and platelet-to-lymphocyte ratio (PLR). Results A total of 576 patients receiving lower extremity fracture surgery were included in this study. Fifty-one patients (8.85%) were identified as FRI, and 28 (54.9%) of these 51 cases were further classified as high-virulence group. The median levels of CRP, ESR, NLR, and MLR were significantly higher in the FRI group than in the non-FRI group (p < 0.01). Similarly, the marginally significantly higher levels of CRP and NLR presented in the high-virulence group, compared to the low-virulence group (p < 0.1). The AUC areas of CRP, NLR, and CRP+NLR were 0.826, 0.650, and 0.873, respectively. We calculated the optimal cut-off points for CRP+NLR as diagnostic markers of high-virulent infection was 0.377. Conclusion This study showed the incidence of FRI in high-risk lower extremity fractures was 8.9%, and identified preoperative serum biomarkers, including CRP, ESR, NLR, and PLR, as useful tools for assisting in the diagnosis of infection. Additionally, the combination of CRP with NLR played a discriminating clinical role in postoperative infections caused by different virulence. Level of Evidence Clinical study.
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Affiliation(s)
- Xiaopei Xu
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Hanzhou Wang
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Yang Liu
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Dong Wang
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Shuo Diao
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Yuling Gao
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
| | - Junlin Zhou
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, People’s Republic of China
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Akgün D, Al-Muhtaresh F, Paksoy A, Lacheta L, Minkus M, Karczewski D, Moroder P. The role of serum D-Dimer for the diagnosis of periprosthetic shoulder infection. Arch Orthop Trauma Surg 2023; 143:1855-1860. [PMID: 35182199 PMCID: PMC10030413 DOI: 10.1007/s00402-022-04385-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 02/05/2022] [Indexed: 11/02/2022]
Abstract
INTRODUCTION D-Dimer was recently identified as an additional biomarker in the diagnosis of hip and knee periprosthetic joint infection (PJI). Currently, there is only one study in literature dealing with the role of D-Dimer in the diagnosis of shoulder PJI. The purpose of this study was, therefore, to validate the sensitivity and specificity of D-Dimer in detecting shoulder PJI. MATERIALS AND METHODS All patients, who underwent septic or aseptic revision shoulder arthroplasty in our institution between November 2018 und March 2021, were analyzed. Our cohort consisted of 30 patients, of that 14 (47%) had a shoulder PJI according the last proposed criteria of the International Consensus Meeting. The diagnostic validity of serum D-Dimer regarding the detection of PJI was analyzed. RESULTS The mean D-Dimer level was significantly higher for the patients with shoulder PJI compared to patients with aseptic failure (1.44 ± 1 mg/l vs. 0.76 ± 0.6 mg/l, p = 0.025). Coagulase-negative staphylococci were the most commonly isolated pathogens, in 9/14 patients (64%), followed by Cutibacterium acnes in 5/14 patients (36%). According to the ROC analysis, a serum D-Dimer threshold of 0.75 mg/l had a sensitivity of 86% and a specificity of 56% for detection of a shoulder PJI. The area under curve was 0.74. A serum C-reactive protein (CRP) cutoff of 10 mg/l showed a sensitivity of 69% and a specificity of 88%. When both serum D-Dimer and CRP above the thresholds of 0.75 mg/l and 10 mg/l, respectively, were used to identify a PJI the sensitivity and specificity were 57% and 100%, respectively. CONCLUSIONS Serum D-Dimer showed a good sensitivity but a poor specificity for the diagnosis of shoulder PJI. Combination D-Dimer and CRP led to improvement of the specificity, however, at the cost of sensitivity. Thus, combination of both methods may be used as a confirmatory test in the diagnosis of shoulder PJI but not to rule out infection. LEVEL OF EVIDENCE Diagnostic level II.
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Affiliation(s)
- Doruk Akgün
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Faisal Al-Muhtaresh
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Alp Paksoy
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Lucca Lacheta
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Marvin Minkus
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Daniel Karczewski
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Philipp Moroder
- Center for Musculoskeletal Surgery, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität Zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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Ahmed AH, Ahmed S, Barakat A, Mangwani J, White H. Inflammatory response in confirmed non-diabetic foot and ankle infections: A case series with normal inflammatory markers. World J Orthop 2023; 14:136-145. [PMID: 36998381 PMCID: PMC10044321 DOI: 10.5312/wjo.v14.i3.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 10/23/2022] [Accepted: 02/01/2023] [Indexed: 03/17/2023] Open
Abstract
BACKGROUND The distinction between foot and ankle wound healing complications as opposed to infection is crucial for the appropriate and efficacious allocation of antibiotic therapy. Multiple reports have focused on the diagnostic accuracy of different inflammatory markers, however, mainly in the diabetic population.
AIM To evaluate the diagnostic accuracy of white cell count (WCC) and C-reactive protein (CRP) as diagnostic tools for this distinction in the non-diabetic cohort.
METHODS Data was reviewed from a prospectively maintained Infectious Diseases Unit database of 216 patients admitted at Leicester University Hospitals–United Kingdom with musculoskeletal infections over the period between July 2014 and February 2020 (68 mo). All patients with confirmed diagnosis of diabetes were excluded while only those with confirmed microbiological or clinical diagnosis of foot or ankle infection were included in our study. For the included patients, we retrospectively retrieved the inflammatory markers (WCCs and CRP) at the time of presentation. Values of CRP 0-10 mg/L and WCC 4.0-11.0 × 109/L were considered normal.
RESULTS After exclusion of patients with confirmed diabetes, 25 patients with confirmed foot or ankle infections were included. All infections were confirmed microbiologically with positive intra-operative culture results. 7 (28%) patients with osteomyelitis (OM) of the foot, 11 (44%) with OM of the ankle, 5 (20%) with ankle septic arthritis and 2 (8%) patients with post-surgical wound infection were identified. Previous bony surgery was identified in 13 (52%) patients, either a corrective osteotomy or an open reduction and internal fixation for a foot or ankle fracture with the infection developing on top of the existing metalwork. 21 (84%) patients did have raised inflammatory markers while 4 (16%) patients failed to mount an inflammatory response even with subsequent debridement and removal of metal work. CRP sensitivity was 84%, while WCC sensitivity was only 28%.
CONCLUSION CRP has a relatively good sensitivity in the diagnosis of foot and ankle infections in non-diabetic patients, whereas WCC is a poor inflammatory marker in the detection of such cases. In presence of clinically high level of suspicion of foot or ankle infection, a normal CRP should not rule out the diagnosis of OM.
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Affiliation(s)
- Amr Hassan Ahmed
- Department of Trauma and Orthopedics, Leicester University Hospitals-NHS Trust, Leicester LE1 5WW, Leicestershire, United Kingdom
| | - Shah Ahmed
- Department of Trauma and Orthopedics, Leicester University Hospitals-NHS Trust, Leicester LE1 5WW, Leicestershire, United Kingdom
| | - Ahmed Barakat
- Department of Trauma and Orthopedics, Leicester University Hospitals-NHS Trust, Leicester LE1 5WW, Leicestershire, United Kingdom
| | - Jitendra Mangwani
- Department of Trauma and Orthopedics, Leicester University Hospitals-NHS Trust, Leicester LE1 5WW, Leicestershire, United Kingdom
| | - Helena White
- Department of Infectious Diseases and Tropical Medicine, Leicester Royal Infirm, Leicester LE1 5WW, Leicestershire, United Kingdom
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Zanna L, Sangaletti R, Akkaya M, Shen T, Abuljadail S, Gehrke T, Citak M. What is the concordance rate of preoperative synovial fluid aspiration and intraoperative biopsy in detecting periprosthetic joint infection of the shoulder? J Shoulder Elbow Surg 2023; 32:492-499. [PMID: 36343792 DOI: 10.1016/j.jse.2022.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/21/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The accuracy of preoperative synovial fluid culture for microbe detection in shoulder periprosthetic joint infection (PJI) is poorly described. To evaluate the utility of preoperative culture data for early pathogen identification for shoulder PJI, we determined the concordance between preoperative synovial fluid culture results and intraoperative tissue culture results. METHODS Fifty patients who met the 2014 Musculoskeletal Infection Society criteria for shoulder PJI between January 2016 and December 2019 were retrospectively reviewed for clinical and demographic data. This cohort of patients was divided into 2 groups based on the concordance between preoperative and intraoperative culture results. The pathogens identified on preoperative and intraoperative cultures were classified as high-virulence or low-virulence. Student's t tests and Mann-Whitney U tests were used as appropriate for continuous variables, and χ2 and Fisher's exact tests were used as appropriate for categorical variables. RESULTS Concordance between preoperative aspiration and intraoperative tissue culture was identified in 28 of 50 patients (56%). Preoperative cultures positive for Gram-positive species were more likely to be concordant than discordant (P = .015). Preoperative cultures positive for Cutibacterium acnes were more likely to be concordant with intraoperative cultures (P = .022). There were more patients with polymicrobial infection in the discordant group compared with the concordant group (P < .001). No statistically significant correlation between the preoperative serum C-reactive protein level and the intraoperative category of bacteria was reported. Staphylococcus aureus and coagulase-negative Staphylococci were associated with high specificity and negative predictive value. Preoperative cultures positive for C. acnes demonstrated sensitivity, specificity, positive predictive value, and negative predictive value lower than 0.8. Gram-negative pathogens demonstrated the highest sensitivity (1) and specificity (1), whereas polymicrobial infections exhibited the lowest sensitivity and positive predictive value. CONCLUSION Preoperative synovial fluid aspiration for shoulder PJI poorly predicts intraoperative culture results, with a discordance of 44%. More favorable concordance was observed for monomicrobial preoperative cultures, particularly for Gram-negative organisms and methicillin-sensitive S. aureus. The overall high rate of discordance between preoperative and intraoperative culture may prompt surgeons to base medical and surgical management on patient history and other factors and avoid relying solely on preoperative synovial fluid culture data.
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Affiliation(s)
- Luigi Zanna
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany; Department of Orthopaedic Surgery, Aou Careggi, University Hospital of Florence, Florence, Italy.
| | - Rudy Sangaletti
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany
| | - Mustafa Akkaya
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany
| | - Tony Shen
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany
| | - Salahulddin Abuljadail
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany; College of Medicine, King Faisal University, Hofuf, Saudi Arabia
| | - Thorsten Gehrke
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany
| | - Mustafa Citak
- Department of Orthopaedic Surgery, Helios ENDO-Klinik Hamburg, Hamburg, Germany
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Hudek R. [Shoulder periprosthetic infections-what to do? : Diagnosis and treatment]. Orthopadie (Heidelb) 2023; 52:85-97. [PMID: 36662261 DOI: 10.1007/s00132-022-04341-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/16/2022] [Indexed: 01/21/2023]
Abstract
Treatment of an infected shoulder prosthesis differs significantly from other joint infections because of the unique microbiome, dominated by Cutibacterium acnes. The cause of an infection, its time of onset, the bacterial spectrum and comorbidities have to be considered for evaluation and treatment. The diagnostic workup is sometimes complex, and the recognition of a chronic and low-grade infection is often difficult because typical clinical and laboratory markers may be normal. Treatment is surgical; the therapeutic spectrum ranges from arthroscopic irrigation and open debridement with the exchange of components to one- and two-stage revisions using antibiotic-loaded spacers. Early detection and a targeted, appropriate therapy are crucial to avoid extensive soft tissue and bone damage.
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Affiliation(s)
- Robert Hudek
- ATOS Klinik Fleetinsel Hamburg, Admiralitätstr. 3-4, 20459, Hamburg, Deutschland.
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Siegert P, Frank BJH, Simon S, Meraner D, Pokorny-Olsen A, Diepold J, Wurnig C, Hofstaetter JG. Changes in microbiological spectrum and antibiotic susceptibility in two-stage exchange for periprosthetic shoulder infections. Arch Orthop Trauma Surg 2022. [PMID: 36175674 DOI: 10.1007/s00402-022-04635-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 09/18/2022] [Indexed: 11/02/2022]
Abstract
BACKGROUND Periprosthetic joint infections (PJI) are a major concern in shoulder arthroplasty, which in some cases require two-stage exchange. While it was shown that low-virulence bacteria are the most isolated pathogens in shoulder PJI, little is known about changes in microbiological spectrum and resistance patterns during two-stage revision. METHODS This retrospective study included all patients (n = 25) who received a two-stage revision from January 2011 to December 2020 for shoulder PJI in one institution. Microbiological spectrum, antimicrobial resistance patterns, and re-revision rates of culture positive first- and second-stage procedures were analyzed. The mean follow-up time was 29.7 months (range 8; 115 months). At final follow-up, subjective shoulder value (SSV) and visual analog scale (VAS) score for pain and satisfaction with the surgery were assessed. RESULTS In 25 patients, a total of 54 2-stage exchange procedures were performed and positive cultures were obtained in 36 of these surgeries (66.7%). A total of 7 out of 25 patients (28.0%) showed a positive microbiological culture at first and second stages. In those patients, the mean time between first and second stages was 30.9 weeks (range 6; 70). Three out of those seven patients (42.9%) had a polymicrobial spectrum with one microorganism persistent at stage two, including Cutibacterium acnes (n = 1) and Staphylococcus epidermidis (MRSE) (n = 2). In all these cases, antimicrobial resistance patterns changed. All cultures with monomicrobial spectrum (n = 4) at first stage showed a changed spectrum. Patients with positive first- and second-stage revisions showed a mean SSV of 49.3% ± 23.5 versus 52.9% ± 29.5 in single positive patients (p = 0.76). Re-revision was performed in five cases, two of those in patients with positive first- and second-stage cultures. CONCLUSION There is a high rate of changes in microbiological spectrum and resistance patterns between culture positive first- and second-stage procedures as well as subsequent re-revisions. Intraoperative samples during reimplantation should be taken and resistance reconsidered in case of re-revision.
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Mederake M, Hofmann UK, Fink B. The significance of synovial biopsy in the diagnostic workup of the low-grade periprosthetic joint infection of shoulder arthroplasty. Arch Orthop Trauma Surg 2022; 142:3157-64. [PMID: 33991235 DOI: 10.1007/s00402-021-03932-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/30/2021] [Indexed: 12/02/2022]
Abstract
INTRODUCTION A common reason for painful shoulder arthroplasties and revision surgery is a low-grade periprosthetic joint infection (PJI). Diagnosing a low-grade infection is, however, a major diagnostic challenge. This applies even more to the shoulder, which differs from other large joints in terms of clinical features and microbiological spectrum. Aim of this study was to evaluate the diagnostic value of the synovial biopsy in the diagnostic workup of low-grade PJI of the shoulder. MATERIALS AND METHODS A retrospective evaluation was conducted on 56 patients receiving revision surgery on their shoulder arthroplasty. A standardized preoperative workup was performed comprising CRP value, leukocyte blood count, synovial fluid microbiological analyses and leukocyte count from joint aspiration, and five synovial biopsy samples for bacteriologic and histologic analysis obtained through an arthroscopic approach. During revision surgery, five samples of periprosthetic tissue were harvested for bacteriologic and histologic analyses. The MSIS-Criteria 2014 were used to evaluate the diagnostic results. RESULTS In total, 15 of 56 revised prostheses turned out as PJI (27%). When applying our diagnostic workup, we obtained a sensitivity of 67% with a specificity of 95%. When performing a subgroup analysis on those patients that had received diagnostic biopsy, a sensitivity of 100% and a specificity of 83% could be achieved. With a sensitivity and specificity of 90% and 83%, respectively, the biopsy is the single method with the highest diagnostic value. CONCLUSIONS The sensitivity of only 67% of our standard workup emphasizes the difficulty to adequately diagnose low-grade infections after shoulder arthroplasty. The excellent specificity of 95% ensures, however, that non-infected prostheses are not incorrectly explanted. This study highlights that synovial biopsy has a high diagnostic value and should be done prior to complex revision surgeries to raise sensitivity in diagnosing a PJI.
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Akgün D, Wiethölter M, Maziak N, Paksoy A, Karczewski D, Scheibel M, Moroder P. Two-Stage Exchange Arthroplasty for Periprosthetic Shoulder Infection Is Associated with High Rate of Failure to Reimplant and Mortality. J Clin Med 2021; 10:5186. [PMID: 34768706 DOI: 10.3390/jcm10215186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Patients with a periprosthetic joint infection (PJI) of the shoulder, who fail to undergo reimplantation in an attempted two-stage exchange seem to be neglected in the current literature. The aim of this study was to assess the clinical course of patients after the first stage in the process of an attempted two-stage exchange for shoulder PJI. Methods: After a retrospective review of our institutional database between 2008 and 2018, 49 patients, who were treated with an intended two-stage exchange for shoulder PJI, were identified. Patients’ demographics, laboratory and health status parameters, along with records of clinical outcome were collected. The primary outcome measurements analyzed were infection eradication, successful reimplantation, and patient survival. Results: Reimplantation was completed in only 35 (71%) of 49 cases and eradication of infection was achieved in 85.7% of patients with successful reimplantation after a mean follow-up duration of 5.1 years (1.1 to 10.2 years). Reasons for failure to reimplant were premature death in 36%, high general morbidity in 29%, satisfaction with the current status in 21%, or severe infection with poor bone and soft tissues in 14% of the patients. Of the 14 cases without reimplantation, eradication rate of infection was 57% after a mean follow-up of 5 years (2.6 to 11 years). The overall mortality rate of the entire cohort was 25% at the latest follow-up and 10% within ninety days after implant removal. Patients who deceased or did not undergo reimplantation during the follow-up were significantly older and had a significantly higher Charlson comorbidity index (CCI). Conclusions: While the two-stage exchange arthroplasty can lead to high rates of infection eradication, a considerable subset of patients never undergoes the second stage for a variety of reasons. Shoulder PJI and its treatment are associated with a high risk of mortality, especially in patients with older age and higher CCI.
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