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Kim MGJ, Overton K. Successful treatment of vertebral osteomyelitis due to Aspergillus flavus in an immunocompetent patient. BMJ Case Rep 2022; 15:e251101. [PMID: 36414342 PMCID: PMC9684962 DOI: 10.1136/bcr-2022-251101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aspergillus osteomyelitis (AO) is a rare and often lethal opportunistic infection in predominantly immunocompromised patients. Treatment has shifted from amphotericin therapy to voriconazole monotherapy due to increased effectiveness and less toxicity. We report a case of an immunocompetent woman with vertebral osteomyelitis due to Aspergillus flavus who was successfully treated with surgery (requiring hardware implantation) and monotherapy posaconazole (following intolerance and hepatitis due to voriconazole). She remained well at follow-up post cessation of 12 months of antifungal therapy. We provide an updated literature review examining the role of azole monotherapy as the gold standard of treatment for AO.
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Affiliation(s)
- Myong Gyu Joshua Kim
- University of New South Wales, Prince of Wales Clinical School, Randwick, New South Wales, Australia
- Infectious Diseases, Prince of Wales Hospital and Community Health Services, Randwick, New South Wales, Australia
| | - Kristen Overton
- University of New South Wales, Prince of Wales Clinical School, Randwick, New South Wales, Australia
- Infectious Diseases, Prince of Wales Hospital and Community Health Services, Randwick, New South Wales, Australia
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Quantifying Deaths from Aspergillosis in HIV Positive People. J Fungi (Basel) 2022; 8:jof8111131. [PMID: 36354898 PMCID: PMC9693143 DOI: 10.3390/jof8111131] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/10/2022] [Accepted: 10/21/2022] [Indexed: 11/17/2022] Open
Abstract
Aspergillus spp. are ubiquitous and cause severe infections in immunocompromised patients. Less is known about its incidence and prognosis in patients with HIV/AIDS. We reviewed the mortality of invasive aspergillosis in HIV/AIDS patients. Pubmed, Embase and Medline databases were used to search for articles. Studies were excluded if they contained other aspergillosis risk factors, no original or patient survival data or were not in English. From 747 articles published, 54 studies and case reports were identified following reading, published between 1985 and 2021, with 54% papers prior to 2000 reporting 853 patients from 16 countries, none from Africa. 707 (83%) patients died with an average time from diagnosis to death of 77.5 days. Postmortem diagnosis was seen in 21% of deaths recorded. A national series from France of 242 cases of invasive aspergillosis diagnosed in life recorded a 3 month mortality of 68% pre-ART, falling to 31% after introduction of ART and voriconazole. CD4 count was recorded in 39 studies and ranged from 2 to >1000 cells/mm3; only 8 patients (1.8%) had a CD4 > 100 cells/mm3. Aspergillosis occurs in patients with HIV/AIDS and associated with high mortality but its slow progression should allow diagnosis and treatment with improved outcome.
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Tsantes AG, Papadopoulos DV, Markou E, Zarokostas K, Sokou R, Trikoupis I, Mavrogenis AF, Houhoula D, Piovani D, Bonovas S, Tsantes AE, Tsakris A, Vrioni G. Aspergillus spp. osteoarticular infections: an updated systematic review on the diagnosis, treatment and outcomes of 186 confirmed cases. Med Mycol 2022; 60:myac052. [PMID: 35867975 PMCID: PMC9849853 DOI: 10.1093/mmy/myac052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/28/2022] [Accepted: 07/19/2022] [Indexed: 01/22/2023] Open
Abstract
Aspergillus spp. osteoarticular infections are destructive opportunistic infections, while there is no clear consensus on their management. The purpose of this review is to investigate the current literature regarding Aspergillus spp. osteoarticular infections. An electronic search of the PubMed and Scopus databases was conducted considering studies that assessed osteoarticular infections from Aspergillus spp. We included only studies with biopsy proven documentation of positive cultures or histological findings for Aspergillus spp., and those with essential information for each case such as the anatomical location of the infection, the type of treatment (conservative, surgical, combination), the antifungal therapy, and the outcome. Overall, 148 studies from 1965 to 2021 including 186 patients were included in the review. One hundred and seven (57.5%) patients underwent surgical debridement in addition to antifungal therapy, while 79 (42.7%) patients were treated only conservatively. Complete infection resolution was reported in 107 (57.5%) patients, while partial resolution in 29 (15.5%) patients. Surgical debridement resulted in higher complete infection resolution rate compared to only antifungal therapy (70.0% vs. 40.5%, P < 0.001), while complete resolution rate was similar for antifungal monotherapy and combination/sequential therapy (58.3% vs. 54.5%; P = 0.76). Last, complete resolution rate was also similar for monotherapy with amphotericin B (58.1%) and voriconazole (58.6%; P = 0.95). The results of this study indicate that antifungal monotherapy has similar efficacy with combination/sequential therapy, while voriconazole has similar efficacy with amphotericin B. Moreover, surgical debridement of the infected focus results in better outcomes in terms of infection eradication compared to conservative treatment. LAY SUMMARY Antifungal monotherapy has similar efficacy with combination/sequential therapy, and voriconazole has similar efficacy with amphotericin B for the treatment of Aspergillus spp. osteoarticular infections, while surgical debridement of the infected focus improves the infection eradication rate.
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Affiliation(s)
- Andreas G Tsantes
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 15772 Athens, Greece
- Department of Microbiology, ‘Saint Savvas’ Oncology Hospital, 11522 Athens, Greece
| | | | - Eleftheria Markou
- Department of Microbiology, University Hospital of Ioannina, Ioannina 45500, Greece
| | | | - Rozeta Sokou
- Neonatal Intensive Care Unit, “Agios Panteleimon” General Hospital of Nikea, Piraeus 18454, Greece
| | - Ioannis Trikoupis
- First Department of Orthopaedics, National and Kapodistrian University of Athens, School of Medicine, Athens 15772, Greece
| | - Andreas F Mavrogenis
- First Department of Orthopaedics, National and Kapodistrian University of Athens, School of Medicine, Athens 15772, Greece
| | - Dimitra Houhoula
- Laboratory of Haematology and Blood Bank Unit, “Attiko” Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens 15772, Greece
| | - Daniele Piovani
- Department of Biomedical Sciences, Humanitas University, 20090 Pieve MI, Milan, Italy
- IRCCS Humanitas Research Hospital, Rozzano 20089 MI, Milan, Italy
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, 20090 Pieve MI, Milan, Italy
- IRCCS Humanitas Research Hospital, Rozzano 20089 MI, Milan, Italy
| | - Argirios E Tsantes
- Laboratory of Haematology and Blood Bank Unit, “Attiko” Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens 15772, Greece
| | - Athanasios Tsakris
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 15772 Athens, Greece
| | - Georgia Vrioni
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 15772 Athens, Greece
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Hatter MJ, Beyer RS, Camino-Willhuber G, Franklin A, Brown NJ, Hashmi S, Oh M, Bhatia N, Lee YP. Primary spinal infections in patients with solid organ transplant: a systematic literature review and illustrative case. JOURNAL OF NEUROSURGERY: CASE LESSONS 2022; 3:CASE22157. [PMID: 35855206 PMCID: PMC9237658 DOI: 10.3171/case22157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/22/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Primary spinal infections (PSIs) are a group of uncommon but serious infectious diseases considered more prevalent and aggressive among patients with chronic immunocompromised states. Association of PSI and solid organ transplant has not been systematically analyzed. The authors performed a systematic review analyzing clinical presentation and mortality of patients with PSI in the setting of solid organ transplant. OBSERVATIONS PSIs in patients with immunosuppressive therapy, such as those with solid organ transplant, may behave differently in terms of epidemiology, clinical presentation, and outcomes compared with nonimmunosuppressed patients. Overall PSI in solid organ transplant patients is associated with a high rate of neurological compromise, postoperative complications, and mortality. LESSONS Accurate diagnosis and appropriate treatment of PSI require a multidisciplinary effort. Localized pain is the most frequently reported symptom associated with PSI. As opposed to PSI in patients without transplant, inflammatory and infectious markers such as white blood cells and C-reactive protein are often not elevated. Furthermore, the causative microorganism profile varies significantly when compared to pyogenic spinal infection in patients without transplant. Aspergillus species was responsible for spondylodiscitis in transplant patients in more than 50% of cases, and the incidence of Aspergillus infection is projected to rise in the coming years.
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Affiliation(s)
| | | | | | | | | | | | - Michael Oh
- Neurosurgery, University of California, Irvine, Irvine, California
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Mertens B, Van Daele R, Depypere M, Lagrou K, Debaveye Y, Wauters J, Nijs S, Metsemakers WJ, Spriet I. Isavuconazole in the Treatment of Aspergillus fumigatus Fracture-Related Infection: Case Report and Literature Review. Antibiotics (Basel) 2022; 11:antibiotics11030344. [PMID: 35326807 PMCID: PMC8944859 DOI: 10.3390/antibiotics11030344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 02/21/2022] [Accepted: 02/25/2022] [Indexed: 02/06/2023] Open
Abstract
Aspergillus fracture-related infection (FRI) is a rare, but severe complication in trauma surgery. The optimal antifungal treatment for Aspergillus osteomyelitis, including FRI, has not been established yet, as only cases have been documented and data on bone penetration of antifungal drugs are scarce. We describe a patient with Aspergillus fumigatus FRI of the tibia who was treated with isavuconazole after developing liver function disturbances during voriconazole therapy. Isavuconazole, the active moiety formed after hydrolysis of the prodrug isavuconazonium sulfate by plasma esterases, was administered in a maintenance dose of 200 mg q24 h, followed by 150 mg q24 h. The patient completed a six-month antifungal treatment course. Although fracture union was not achieved during six months of follow-up after therapy cessation, no confirmatory signs of FRI were observed. Additionally, two literature searches were conducted to review available data on antifungal treatment of Aspergillus osteomyelitis and bone penetration of antifungals. One hundred and eight cases of Aspergillus osteomyelitis, including six (5.6%) FRI cases, were identified. Voriconazole and (lipid formulations of) amphotericin B were the most commonly used antifungals. In three (2.8%) cases isavuconazole was prescribed as salvage therapy. Data on antifungal bone penetration were reported for itraconazole, voriconazole, amphotericin B, anidulafungin and 5-fluorocytosin. Isavuconazole might be a promising alternative for the treatment of Aspergillus osteomyelitis. However, standardized case documentation is needed to evaluate the efficacy of isavuconazole and other antifungals in the treatment of Aspergillus osteomyelitis, including FRI.
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Affiliation(s)
- Beatrijs Mertens
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, B-3000 Leuven, Belgium; (R.V.D.); (I.S.)
- Pharmacy Department, University Hospitals Leuven, B-3000 Leuven, Belgium
- Correspondence: ; Tel.: +32-16-34-69-57
| | - Ruth Van Daele
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, B-3000 Leuven, Belgium; (R.V.D.); (I.S.)
- Pharmacy Department, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Melissa Depypere
- Clinical Department of Laboratory Medicine, University Hospitals Leuven, B-3000 Leuven, Belgium; (M.D.); (K.L.); (J.W.)
| | - Katrien Lagrou
- Clinical Department of Laboratory Medicine, University Hospitals Leuven, B-3000 Leuven, Belgium; (M.D.); (K.L.); (J.W.)
- Belgian National Reference Center for Mycosis, University Hospitals Leuven, B-3000 Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, KU Leuven, B-3000 Leuven, Belgium
| | - Yves Debaveye
- Department of Cellular and Molecular Medicine, KU Leuven, B-3000 Leuven, Belgium;
- Intensive Care Unit, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Joost Wauters
- Clinical Department of Laboratory Medicine, University Hospitals Leuven, B-3000 Leuven, Belgium; (M.D.); (K.L.); (J.W.)
- Medical Intensive Care Unit, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Stefaan Nijs
- Department of Development and Regeneration, KU Leuven, B-3000 Leuven, Belgium; (S.N.); (W.-J.M.)
- Department of Trauma Surgery, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Willem-Jan Metsemakers
- Department of Development and Regeneration, KU Leuven, B-3000 Leuven, Belgium; (S.N.); (W.-J.M.)
- Department of Trauma Surgery, University Hospitals Leuven, B-3000 Leuven, Belgium
| | - Isabel Spriet
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, B-3000 Leuven, Belgium; (R.V.D.); (I.S.)
- Pharmacy Department, University Hospitals Leuven, B-3000 Leuven, Belgium
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Spondylodiscitis Caused by Aspergillus Species. Diagnostics (Basel) 2021; 11:diagnostics11101899. [PMID: 34679596 PMCID: PMC8534844 DOI: 10.3390/diagnostics11101899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 12/13/2022] Open
Abstract
Background: Spondylodiscitis caused by Aspergillus spp. is a rare but life-threatening clinical entity. However, a consensus on diagnostic criteria and most effective medical management is still missing. The present study is a review of all published cases of spondylodiscitis caused by Aspergillus spp., in an effort to elucidate epidemiology, patients’ characteristics, andand the medical and surgical treatment options and their effectiveness. Methods: A thorough review of all existing spondylodiscitis cases caused by Aspergillus was performed. Data regarding demographics, responsible fungus, time between symptoms’ onset and firm diagnosis, antifungal treatment (AFT), surgical intervention, andand the infection’s outcome were investigated. Results: A total of 118 Aspergillus spondylodiscitis cases, yielding 119 Aspergillus spp. isolates, were identified in the literature. The patients’ mean age was 40.6 years. Magnetic resonance imaging (MRI) (after its introduction) indicated the diagnosis in most cases (66.7%), while definite diagnosis was established through cultures in the majority of cases (73.7%). Aspergillus fumigatus was isolated in most cases (73; 61.3%), followed by Aspergillus flavus (15; 12.6%) andand Aspergillus nidulans and terreus (7; 5.9%, each). The mean time between symptoms’ onset and diagnosis was 5.7 months. Amphotericin B was the preferred antifungal regiment (84 cases; 71.2%), followed by voriconazole (31; 26.3%), and the mean AFT duration was 6.1 months. The final outcome was successful in 93 cases (78.8%). Furthermore, 77 patients (65.3%) underwent surgery. Conclusions: Spondylodiscitis caused by Aspergillus spp. represents a clinical challenge, requiring a multidisciplinary approach. The present review has shown that prolonged AFT has been the standard of care of the studied cases, while surgical treatment seems to play an important role in selected patents.
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Perna A, Ricciardi L, Fantoni M, Taccari F, Torelli R, Santagada DA, Fumo C, Tamburrelli FC, Proietti L. Spontaneous Vertebral Aspergillosis, the State of Art: A Systematic Literature Review. Neurospine 2020; 18:23-33. [PMID: 33211946 PMCID: PMC8021829 DOI: 10.14245/ns.2040338.169] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 07/23/2020] [Indexed: 01/07/2023] Open
Abstract
Objective Vertebral aspergillosis is quite rare conditions, often misdiagnosed, that requires long-term antibiotic therapy, and sometimes, surgical treatments. The present investigations were aimed to investigate the epidemiology, clinical-radiological aspects, treatment protocols, and outcomes of Aspergillus-mediated vertebral osteomyelitis.
Methods A systematic review of the pertinent English literature according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines was performed. The research was conducted on Cochrane library, MEDLINE, PubMed, and Scopus using as search-terms “Aspergillus,” “vertebral osteomyelitis,” “spondylodiscitis,” “spine infection.” A case of vertebral aspergillosis conservatively managed was also reported.
Results Eighty-nine articles were included in our systematic review. Including the reported case, our analysis covered 112 cases of vertebral aspergillosis. Aspergillus fumigatus was isolated in 68 cases (61.2%), Aspergillus flavus in 14 (12.6%), Aspergillus terreus in 4 (3.6%), Aspergillus nidulans in 2 (1.8%). Seventy-three patients (65.7%) completely recovered at the last follow-up evaluation; in 7 patients (6.3%) radiological signs of chronic infection were reported, whereas 32 patients (28.8%) died during the follow-up.
Conclusion This systematic review summarized the state of the art on vertebral aspergillosis, retrieving data on clinical features, diagnostic criteria and current limitations, treatment alternatives, and their outcomes.
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Affiliation(s)
- Andrea Perna
- UOC Chirurgia Vertebrale, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Rome, Italy
| | - Luca Ricciardi
- UO di Neurochirurgia, Pia fondazione di Culto e Religione Cardinal G. Panico, Tricase, Italy.,UOC di Neurochirurgia, Azienda Ospedaliera Sant'Andrea, Dipartimento NESMOS, Facoltà di Medicina e Psicologia, Sapienza, Rome, Italy
| | - Massimo Fantoni
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy.,Dipartimento di Sicurezza e Bioetica, Università Cattolica S. Cuore, Rome, Italy
| | - Francesco Taccari
- Dipartimento di Sicurezza e Bioetica, Università Cattolica S. Cuore, Rome, Italy
| | - Riccardo Torelli
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Domenico Alessandro Santagada
- UOC Chirurgia Vertebrale, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Rome, Italy.,Istituto di clinica ortopedica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Caterina Fumo
- UOC Chirurgia Vertebrale, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Rome, Italy
| | - Francesco Ciro Tamburrelli
- UOC Chirurgia Vertebrale, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Rome, Italy.,Istituto di clinica ortopedica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Luca Proietti
- UOC Chirurgia Vertebrale, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Rome, Italy.,Istituto di clinica ortopedica, Università Cattolica del Sacro Cuore, Rome, Italy
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Dai G, Wang T, Yin C, Sun Y, Xu D, Wang Z, Luan L, Hou J, Li S. Aspergillus spondylitis: case series and literature review. BMC Musculoskelet Disord 2020; 21:572. [PMID: 32828133 PMCID: PMC7443290 DOI: 10.1186/s12891-020-03582-x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/10/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Spinal fungal infections, especially spinal Aspergillus infections, are rare in the clinic. Here, we introduce the clinical features, diagnosis, treatment, and prognoses of 6 cases of Aspergillus spondylitis. METHODS We retrospectively analysed the complete clinical data of patients with Aspergillus spondylitis treated in our hospital from January 2013 to January 2020. RESULTS Aspergillus fumigatus was isolated in 4 cases, and Aspergillus spp. and Aspergillus niger were isolated in 1 case each. All six patients reported varying degrees of focal spinal pain; one patient reported radiating pain, one patient experienced bowel dysfunction and numbness in both lower limbs, and three patients had fever symptoms. One case involved the thoracic spine, one case involved the thoracolumbar junction, and 4 cases involved the lumbar spine. Three patients were already in an immunosuppressed state, and three patients entered an immunosuppressed state after spinal surgery. All six patients were successfully cured, and five required surgery. Of the 5 patients who underwent surgical treatment, 2 had spinal cord compression symptoms, and 3 had spinal instability. At the end of follow-up, 1 patient reported left back pain and 1 patient reported left limb numbness. CONCLUSION The clinical manifestations of Aspergillus spondylitis are non-specific, and the diagnosis depends on typical imaging findings and microbiological and histopathological examination results. When there is no spinal instability, spinal nerve compression symptoms, or progressive deterioration, antifungal therapy alone may be considered. If spinal instability, spinal nerve compression, or epidural abscess formation is present, surgery combined with antifungal therapy is recommended.
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Affiliation(s)
- Guohua Dai
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Ting Wang
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China.
| | - Chuqiang Yin
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Yuanliang Sun
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Derong Xu
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Zhongying Wang
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Liangrui Luan
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Jianwen Hou
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China
| | - Shuzhong Li
- Department of Spine Surgery, Affiliated Hospital of Qingdao University, 16 jiangsu road, Shinan District, Qingdao City, Post Code: 266000, Shandong Province, China.
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