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Li Q, Wang L, Yang H, Yang X, Liu L, Wang L, Song Y. Surgical Treatment Outcomes of Anterior-Only Correction and Reconstruction for Severe Cervical Kyphotic Deformity with Neurofibromatosis-1: A Retrospective Study with a 5-Year Follow-Up. Orthop Surg 2024; 16:1631-1641. [PMID: 38769783 PMCID: PMC11216833 DOI: 10.1111/os.14096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/21/2024] [Accepted: 04/26/2024] [Indexed: 05/22/2024] Open
Abstract
OBJECTIVES Currently, anterior-only (AO), posterior-only, and combined anterior-posterior spinal fusions are common strategies for treating cervical kyphosis in patients with neurofibromatosis-1 NF-1. Nevertheless, the choice of surgical strategy remains a topic of controversy. The aim of our study is to evaluate the safety and effectiveness of anterior decompression and spinal reconstruction for the treatment of cervical kyphosis in patients with NF-1. METHODS Twelve patients with NF-1-associated cervical kyphotic deformity were reviewed retrospectively between January 2010 and April 2020. All patients underwent AO correction and reconstruction. The X-ray was followed up in all these patients to assess the preoperative and postoperative local kyphosis angle (LKA), the global kyphosis angle (GKA), the sagittal vertical axis, and the T1 slope. The visual analog scale score, Japanese Orthopedic Association (JOA) score, and neck disability index (NDI) score were used to evaluate the improvement inclinical symptoms. The results of the difference in improvement from preoperatively to the final follow-up assessment were assessed using a paired t-test or Mann-Whitney U-test. RESULTS The LKA and GKA decreased from the preoperative average of 64.42 (range, 38-86) and 35.50 (range, 10-81) to an average of 16.83 (range, -2 to 46) and 4.25 (range, -22 to 39) postoperatively, respectively. The average correction rates of the LKA and GKA were 76.11% and 111.97%, respectively. All patients had achieved satisfactory relief of neurological symptoms (p < 0.01). JOA scores were improved from 10.42 (range, 8-16) preoperatively to 15.25 (range, 11-18) at final follow-up (p < 0.01). NDI scores were decreased from an average of 23.25 (range, 16-34) preoperatively to an average of 7.08 (range, 3-15) at the final follow-up (p < 0.01). CONCLUSION Anterior-only correction and reconstruction is a safe and effective method for correcting cervical kyphosis in NF-1 patients. In fixed cervical kyphosis cases, preoperative skull traction should also be considered.
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Affiliation(s)
- Qiujiang Li
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
| | - Liang Wang
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
| | - Huiliang Yang
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
| | - Xi Yang
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
| | - Limin Liu
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
| | - Lei Wang
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
| | - Yueming Song
- Department of Orthopedic SurgeryWest China Hospital, Sichuan UniversityChengduChina
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Wang D, Zhang BH, Wen X, Chen KH, Xiao HT, Xu XW, Li QF. Clinical features and surgical treatments of scoliosis in neurofibromatosis type 1: a systemic review and meta-analysis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024; 33:2646-2665. [PMID: 38526628 DOI: 10.1007/s00586-024-08194-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 12/29/2023] [Accepted: 02/13/2024] [Indexed: 03/27/2024]
Abstract
BACKGROUND Neurofibromatosis type 1 (NF 1) is an autosomal-dominant tumor predisposition genetic disease affecting approximately 1 in 3000 live births. The condition could present various manifestations ranging from skin abnormalities to neurological tumors. The musculoskeletal system could also be frequently affected, and scoliosis is the most common orthopedic manifestation. Characterized by the early-onset and rapid progression tendency, NF 1-related dystrophic scoliosis presented discrepancies from idiopathic scoliosis in terms of natural history, clinical features, and management outcomes and thus required special attention. In the current study, the authors conducted a systemic review to outline the body of evidence of the natural history, clinical characteristics, surgical outcomes, and surgical complications of NF 1-induced scoliosis, aiming to provide an elucidative insight into this condition. METHOD Systemic review and meta-analysis were conducted according to the latest Preferred Reporting Items for Systematic Reviews Meta-Analyses (PRISMA) guidelines. The search was performed in Medline, Embase, and Web of Science Core Collection up to December 27, 2022, using related keywords. Clinical features such as frequencies, segmental involvement, and hereditary information were summarized and described qualitatively. Meta-analysis was conducted using R software and the 'meta' package to yield an overall outcome of efficacy and safety of surgical management, precisely, spinal fusion procedure and growing rods procedure. Corrective rate of Cobb angle, sagittal kyphosis angle, and T1-S1 length post-operative and at the last follow-up was used to evaluate the efficacy, and the occurrence of surgery-related complications was used to evaluate the safety. RESULT A total of 37 articles involving 1023 patients were included. Approximately 26.6% of the NF 1 patients would present with scoliosis. Patients tend to develop scoliosis at an earlier age. The thoracic part turned out to be the most affected segment. No obvious correlation between scoliosis and genotype or hereditary type was observed. Both spinal fusion and growing rod surgery have shown acceptable treatment outcomes, with spinal fusion demonstrating better performance in terms of effectiveness and safety. The growing rods technique seemed to allow a better lengthening of the spine. The mainstay post-operative complications were implant-related complications but could be managed with limited revision surgery. Severe neurological deficits were rarely reported. CONCLUSION Scoliosis, especially the subtype characterized by dystrophic bony changes, is a significant orthopedic manifestation of NF1. It has an early onset, a tendency to persistently and rapidly progress, and is challenging to deal with. The current review outlines the available evidence from the perspective of natural history, clinical features, and the treatment efficacy and safety of the mainstay surgical options. Patients with NF1 scoliosis will benefit from a better understanding of the disease and evidence based treatment strategies.
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Affiliation(s)
- Dun Wang
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Sichuan University School of Medicine, No. 37 Wainan Guoxue Road, Chengdu, 610041, China
| | - Bo-Han Zhang
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Sichuan University School of Medicine, No. 37 Wainan Guoxue Road, Chengdu, 610041, China
| | - Xue Wen
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Sichuan University School of Medicine, No. 37 Wainan Guoxue Road, Chengdu, 610041, China
| | - Kun-Hao Chen
- Department of Orthopedic Surgery, West China Hospital of Sichuan University, No. 37 Wainan Guoxue Road, Chengdu, 610041, China
| | - Hai-Tao Xiao
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Sichuan University School of Medicine, No. 37 Wainan Guoxue Road, Chengdu, 610041, China
| | - Xue-Wen Xu
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Sichuan University School of Medicine, No. 37 Wainan Guoxue Road, Chengdu, 610041, China.
| | - Qing-Feng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China.
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Kumarasamy S, Sawarkar DP, Singh PK, Kumar R, Chandra PS, Kale SS. Correction of pediatric cervical kyphosis: our experience and systematic-literature review. Spine Deform 2024; 12:603-620. [PMID: 38252256 DOI: 10.1007/s43390-023-00809-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 12/16/2023] [Indexed: 01/23/2024]
Abstract
BACKGROUND Pediatric cervical kyphosis is a distinct entity with diverse etiology (congenital, syndromic, traumatic, metabolic or neoplastic). Surgical correction in pediatric population is challenging due to their growing spine and low blood volume. PURPOSE To analyse their presentation, surgical techniques and outcome of pediatric cervical kyphosis and systematically review the pertinent literature. DESIGN Retrospective study. PATIENT SAMPLE 16 patients aged ≤ 18 years who underwent correction for cervical kyphosis between 2009 and 2021. OUTCOME MEASURES Nurick's grading, mJOA score and Global cobb's angle. METHODS Clinical parameters (Nurick grading and mJOA score) were noted from database on admission and on follow-up at 6 months. Radiological parameters of assessment included Global Cobb's angle. The C2-C7 Cobb angle was the angle of C2 vertebra lower end plate and C7 vertebra lower end plate. For C1-2 kyphosis, anterior border of C1 and anterior border of C2 angle was taken. Radiographic parameters were studied on CT and radiographs of cervical spine to assess for stability, the degree of deformity correction and fusion status at 6 months follow-up. RESULTS 16 patients with mean age of 14.2 ± 3 years (9 syndromic, 4 post-traumatic, 2 metabolic and 1 post-laminectomy). All underwent surgical correction, 6 underwent Antero-posterior spinal fusion, 6 underwent Posterior spinal fusion and 4 underwent Anterior spinal fusion. There was significant clinical improvement postoperatively with-Nurick grade (pre vs. post: 2.8 vs. 1.8, p = 0.004), mJOA score (pre vs. post: 11.3 vs. 14, p = 0.003). There was significant deformity correction of Cobb's angle from 40.7 ± 26.5° to 14.9 ± 10° (p = 0.001). Early complications included intraoperative hemodynamic instability (3) and wound complication (1). Mean follow-up was 76.9 ± 59.3 months. CONCLUSION Pediatric cervical kyphosis is a debilitating condition which are managed surgically. Approach has to be individualized to the pathology and good results can be achieved. Patients should be screened for syndromic association and followed-up regularly.
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Affiliation(s)
- Sivaraman Kumarasamy
- Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Dattaraj Parmanand Sawarkar
- Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Pankaj Kumar Singh
- Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Rajinder Kumar
- Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Poodipedi Sarat Chandra
- Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Shashank Sharad Kale
- Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
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Liang W, Zhou C, Bai J, Zhang H, Jiang B, Wang J, Fu L, Long H, Huang X, Zhao J, Zhu H. Current advancements in therapeutic approaches in orthopedic surgery: a review of recent trends. Front Bioeng Biotechnol 2024; 12:1328997. [PMID: 38405378 PMCID: PMC10884185 DOI: 10.3389/fbioe.2024.1328997] [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: 10/27/2023] [Accepted: 01/25/2024] [Indexed: 02/27/2024] Open
Abstract
Recent advancements in orthopedic surgery have greatly improved the management of musculoskeletal disorders and injuries. This review discusses the latest therapeutic approaches that have emerged in orthopedics. We examine the use of regenerative medicine, including stem cell therapy and platelet-rich plasma (PRP) injections, to accelerate healing and promote tissue regeneration. Additionally, we explore the application of robotic-assisted surgery, which provides greater precision and accuracy during surgical procedures. We also delve into the emergence of personalized medicine, which tailors treatments to individual patients based on their unique genetic and environmental factors. Furthermore, we discuss telemedicine and remote patient monitoring as methods for improving patient outcomes and reducing healthcare costs. Finally, we examine the growing interest in using artificial intelligence and machine learning in orthopedics, particularly in diagnosis and treatment planning. Overall, these advancements in therapeutic approaches have significantly improved patient outcomes, reduced recovery times, and enhanced the overall quality of care in orthopedic surgery.
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Affiliation(s)
- Wenqing Liang
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Chao Zhou
- Department of Orthopedics, Zhoushan Guanghua Hospital, Zhoushan, China
| | - Juqin Bai
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Hongwei Zhang
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Bo Jiang
- Rehabilitation Department, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Jiangwei Wang
- Medical Research Center, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Lifeng Fu
- Department of Orthopedics, Shaoxing City Keqiao District Hospital of Traditional Chinese Medicine, Shaoxing, China
| | - Hengguo Long
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Xiaogang Huang
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Jiayi Zhao
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Haibing Zhu
- Department of Orthopaedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
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Han B, Wang J, Hai Y, Sun D, Liang W, Yin P, Ding H. The Incidence, Changes and Treatments of Cervical Deformity After Infection and Inflammation. Neurospine 2023; 20:205-220. [PMID: 37016867 PMCID: PMC10080454 DOI: 10.14245/ns.2244744.372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 12/15/2022] [Indexed: 04/03/2023] Open
Abstract
A healthy cervical spine with normal movement is the basis of many daily activities and is essential for maintaining a good quality of life. However, the alignment, fusion, and structure of the cervical spine can change for various reasons, leading to cervical deformity, mainly kyphosis. Approximately 5%‒20% of spinal infections in the cervical spine cause cervical deformity. The deformity can recover early; however, the disease's long-term existence or the continuous action of abnormal stress may lead to intervertebral fusion and abnormal osteophytes. Many gaps and controversies exist regarding infectious cervical deformities, including a lack of clear definitions and an acceptable classification system thereby requiring further research. Moreover, there is no consensus on the indications for postinfectious cervical deformity associated with <i>Mycobacterium tuberculosis</i>, <i>Staphylococcus aureus</i>, and Brucellosis. Therefore, we reviewed and discussed the incidence, clinical manifestations, changes, and treatment of infectious and inflammatory secondary cervical deformities from common to rare to provide a theoretical basis for clinical decision-making.
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Affiliation(s)
- Bo Han
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Jianqiang Wang
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yong Hai
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
- Corresponding Author Yong Hai Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, GongTiNanLu 8#, Chao-Yang District, Beijing 100020, China
| | - Duan Sun
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Weishi Liang
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Peng Yin
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Hongtao Ding
- Department of Orthopedics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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Xu C, Wang R, Li J, Zhong H, Zhang Z, Cui C, Sun B, Tian Y, Chen H, Shen X, Liu Y, Yuan W. Intervertebral-spreader-assisted anterior cervical discectomy and fusion prevents postoperative axial pain by alleviating facet joint pressure. J Orthop Surg Res 2022; 17:91. [PMID: 35168657 PMCID: PMC8845354 DOI: 10.1186/s13018-022-02983-z] [Citation(s) in RCA: 2] [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: 09/14/2021] [Accepted: 02/02/2022] [Indexed: 01/08/2023] Open
Abstract
Objective To evaluate the relationship of postoperative cervical axial pain with different vertebral distraction methods used during ACDF procedures in cervical spondylosis patients. Methods Ninety-four single-level cervical spondylotic myelopathy patients with significantly loss of intervertebral disc height who underwent ACDF surgery in our institute between January 2018 and January 2020 were enrolled. Cervical spine lateral radiographs were taken preoperatively, 3 days, 1-month, 2-month and 6-month after the surgery. The intervertebral disc height (IDH), interfacet distance (IFD), JOA (Japanese Orthopaedic Association) score, NDI (Neck Disability Index) score, nVAS (Neck Visual Analogue Scale) score and aVAS (Arm Visual Analogue Scale) score were measured. The correlation of clinical parameters and intervertebral disc height was evaluated. Then the correlation of clinical outcomes and different distraction method was evaluated. The patients were randomly divided into two groups, one uses Casper pin distractor system alone for distraction (Caspar alone group) and the other uses spreader assisted distraction method (Casper + spreader group). In biomechanical study, four cervical spine cadavers were selected for facet pressure measurements under different vertebral distraction methods, and the facet joint pressure was measured using force sensors. Results Satisfactory cervical fusion and neurological recovery were achieved in all patients. No significant correlation of IDH, IFD, JOA, NDI or aVAS with nVAS score was found. No significant difference between the change in disc height and clinical outcomes was found. However, by comparing the clinical parameters of patients in different vertebral distraction groups, we found significant changes in the early nVAS and NDI scores (P = 0.11, P = 0.48) of the Casper + spreader group (3 days postoperation), and was associated with a better nVAS score at 2 months postoperation (P < 0.05). The biomechanical study in cervical cadavers also showed significantly and continuously decreased facet joint pressure in the spreader assisted vertebral distraction group (P < 0.01). Conclusions Spreader-assisted vertebral distraction method effectively alleviates postoperative neck pain in degenerative cervical spondylosis patients treated with ACDF. The mechanism may be related to the transient relief of facet joint pressure during the vertebral distraction procedure in ACDF.
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Affiliation(s)
- Chen Xu
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Ruizhe Wang
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Jingchi Li
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China.,Department of Orthopedics, Hospital (T.C.M) Affiliated to Southwest Medical University, 182th Chunhui Road, Luzhou, Sichuan Province, 646000, People's Republic of China
| | - Huajian Zhong
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Zifang Zhang
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Cheng Cui
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Baifeng Sun
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Ye Tian
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Huajiang Chen
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Xiaolong Shen
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China.
| | - Yang Liu
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China.
| | - Wen Yuan
- Spine Center, Department of Orthopedics, Shanghai Changzheng Hospital, Naval Medical University, 415th Fengyang Road, Shanghai, 200003, People's Republic of China.
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Zhang H, Deng A, Guo C, Zhou Z, Xiao L. Halo traction combined with posterior-only approach correction for cervical kyphosis with Neurofibromatosis-1: minimum 2 years follow-up. BMC Musculoskelet Disord 2021; 22:973. [PMID: 34814912 PMCID: PMC8609785 DOI: 10.1186/s12891-021-04864-8] [Citation(s) in RCA: 3] [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: 07/09/2021] [Accepted: 11/12/2021] [Indexed: 12/05/2022] Open
Abstract
Background Surgical management of cervical kyphosis in patients with NF-1 is a challenging task. Presently, anterior-only (AO), posterior-only (PO) and combined anterior-posterior (AP) spinal fusion are common surgical strategies. However, the choice of surgical strategy and application of Halo traction remain controversial. Few studies have shown and recommended posterior-only approach for cervical kyphosis correction in patients with NF-1. The aim of this study is to evaluate the safety and the effectiveness of halo Traction combined with posterior-only approach correction for treatment of cervical kyphosis with NF-1. Methods Twenty-six patients with severe cervical kyphosis due to NF-1 were reviewed retrospectively between January 2010 and April 2018. All the cases underwent halo traction combined with posterior instrumentation and fusion surgery. Correction result, neurologic status and complications were analyzed. Results In this study, cervical kyphosis Cobb angle decreased from initial 61.3 ± 19.7 degrees to postoperative 10.6 ± 3.7 degrees (P<0.01), with total correction rate of 82.7%, which consist of 45.8% from halo traction and 36.9% from surgical correction. JOA scores were improved from preoperative 13.3 ± 1.6 to postoperative 16.2 ± 0.7 (P<0.01). Neurological status was also improved. There was no correction loss and the neurological status was stable in mean 43 months follow-up. Three patients experienced minor complications and one patient underwent a second surgery. Conclusion Halo traction combined with PO approach surgery is safe and effective method for cervical kyphosis correction in patients with NF-1. A satisfied correction result, and successful bone fusion can be achieved via this procedure, even improvement of neurological deficits can also be obtained. Our study suggested that halo traction combined with PO approach surgery is another consideration for cervical kyphosis correction in patients with NF-1.
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Affiliation(s)
- Hongqi Zhang
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central-South University, Changsha, China
| | - Ang Deng
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central-South University, Changsha, China.,National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central-South University, Changsha, China
| | - Chaofeng Guo
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central-South University, Changsha, China
| | - Zhenhai Zhou
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central-South University, Changsha, China.,National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central-South University, Changsha, China
| | - Lige Xiao
- Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central-South University, Changsha, China. .,National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central-South University, Changsha, China.
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Ding C, Guo Y, Wu T, Wang B, Huang K, He J, Liu H. Atlantoaxial Dislocation Associated with Type 1 Neurofibromatosis: Case Report and Review of the Literature. World Neurosurg 2020; 143:261-267. [PMID: 32750509 DOI: 10.1016/j.wneu.2020.07.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/23/2020] [Accepted: 07/26/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Neurofibromatosis type 1 (NF-1) is an autosomal dominant genetic condition in which spinal deformities are commonly involved. However, atlantoaxial dislocation in NF-1 is extremely rare. A review of the English literature has identified only 10 cases in 8 reports. We report a rare case involving NF-1 associated with severe atlantoaxial dislocation. CASE DESCRIPTION A 22-year-old woman with NF-1 presented with progressive numbness in her left upper and lower extremities and gait difficulty for 2 months. She was treated with skull traction and partial reduction was achieved. Initial surgical strategy was posterior fusion using a screw-rod-wire construct, but significant bleeding was encountered during the surgery. To shorten the procedure time, a single sublaminar wire of the atlas was tied to the spinous process of the axis to accomplish the reduction and fixation. C1-C2 fusion was performed using iliac crest autograft. The patient had significant improvement of neurologic deficit after surgery. Due to relatively poor fixation provided by the wire, she was requested to rest in bed for the first 3 months and to wear a cervical orthosis for the next 3 months. Solid bony fusion was confirmed by radiologic examination at 18-month follow-up. CONCLUSIONS Atlantoaxial dislocation is a rare complication in NF-1 patients. Surgical reduction combined with fusion is essential for a good outcome. Spine surgeons should also be knowledgeable about the possibility of significant hemorrhage before surgery.
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Affiliation(s)
- Chen Ding
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yingjun Guo
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Tingkui Wu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Beiyu Wang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kangkang Huang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Junbo He
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hao Liu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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Mladenov KV, Spiro AS, Krajewski KL, Stücker R, Kunkel P. Management of spinal deformities and tibial pseudarthrosis in children with neurofibromatosis type 1 (NF-1). Childs Nerv Syst 2020; 36:2409-2425. [PMID: 32613421 PMCID: PMC8346390 DOI: 10.1007/s00381-020-04775-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 06/23/2020] [Indexed: 12/19/2022]
Abstract
UNLABELLED The skeletal system is affected in up to 60% of patients with neurofibromatosis type 1. The most commonly observed entities are spinal deformities and tibial dysplasia. Early recognition of radiologic osseous dystrophy signs is of utmost importance because worsening of the deformities without treatment is commonly observed and surgical intervention is often necessary. Due to the relative rarity and the heterogenic presentation of the disease, evidence regarding the best surgical strategy is still lacking. PURPOSE To report our experience with the treatment of skeletal manifestations in pediatric patients with (neurofibromatosis type 1) NF-1 and to present the results with our treatment protocols. MATERIALS AND METHODS This is a retrospective, single expert center study on children with spinal deformities and tibial dysplasia associated with NF-1 treated between 2006 and 2020 in a tertiary referral institution. RESULTS Spinal deformity: Thirty-three patients (n = 33) were included. Mean age at index surgery was 9.8 years. In 30 patients (91%), the deformity was localized in the thoracic and/or lumbar spine, and in 3 patients (9%), there was isolated involvement of the cervical spine. Eleven patients (33%) received definitive spinal fusion as an index procedure and 22 (67%) were treated by means of "growth-preserving" spinal surgery. Halo-gravity traction before index surgery was applied in 11 patients (33%). Progression of deformity was stopped in all patients and a mean curve correction of 60% (range 23-98%) was achieved. Mechanical problems with instrumentation requiring revision surgery were observed in 55% of the patients treated by growth-preserving techniques and in none of the patients treated by definitive fusion. One patient (3%) developed a late incomplete paraplegia due to a progressive kyphotic deformity. Tibial dysplasia: The study group comprised of 14 patients. In 5 of them (36%) pathological fractures were present on initial presentation. In the remaining 9 patients (64%), anterior tibial bowing without fracture was observed initially. Four of them (n = 4, 28%) subsequently developed a pathologic fracture despite brace treatment. Surgical treatment was indicated in 89% of the children with pathological fractures. This involved resection of the pseudarthrosis, autologous bone grafting, and intramedullary nailing combined with external fixation in some of the cases. In 50% of the patients, bone morphogenic protein was used "off-label" in order to promote union. Healing of the pseudarthrosis was achieved in all of the cases and occurred between 5 to 13 months after the index surgical intervention. Four of the patients treated surgically needed more than one surgical intervention in order to achieve union; one patient had a re-fracture. All patients had a good functional result at last follow-up. CONCLUSION Early surgical intervention is recommended for the treatment dystrophic spinal deformity in children with NF-1. Good and sustainable curve correction without relevant thoracic growth inhibition can be achieved with growth-preserving techniques alone or in combination with short spinal fusion at the apex of the curve. Preoperative halo-gravity traction is a safe and very effective tool for the correction of severe and rigid deformity in order to avoid neurologic injury. Fracture union in tibial dysplasia with satisfactory functional results can be obtained in over 80% of the children by means of surgical resection of the pseudarthrosis, intramedullary nailing, and bone grafting. Wearing a brace until skeletal maturity is achieved is mandatory in order to minimize the risk of re-fracture.
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Affiliation(s)
- Kiril V. Mladenov
- Altona Children’s Hospital – AKK/UKE, Bleickenallee 38, 22763 Hamburg, Germany
| | | | | | - Ralf Stücker
- Altona Children’s Hospital – AKK/UKE, Bleickenallee 38, 22763 Hamburg, Germany
| | - Philip Kunkel
- Altona Children’s Hospital – AKK/UKE, Bleickenallee 38, 22763 Hamburg, Germany
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Wang J, Liu C, Wang C, Li J, Lv G, A J, Deng Y, Wang W. Early and Midterm Outcomes of Surgical Correction for Severe Dystrophic Cervical Kyphosis in Patients with Neurofibromatosis Type 1: A Retrospective Multicenter Study. World Neurosurg 2019; 127:e1190-e1200. [PMID: 31004860 DOI: 10.1016/j.wneu.2019.04.096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To evaluate the early and midterm outcomes of surgical correction for severe dystrophic cervical kyphosis in patients with neurofibromatosis type 1 (NF-1) and analyze the pathomechanics and the influence on surgical efficacy of related systemic skeletal dystrophy. METHODS Ten patients who underwent surgical correction for NF-1-related severe dystrophic cervical kyphosis were reviewed. Radiographic parameters, including local and global Cobb angle, sagittal vertical axis, and T-1 slope, were measured. The visual analog scale score, Japanese Orthopaedic Association score, Neck Disability Index, Patient Satisfaction Index, and complications were evaluated. RESULTS The average follow-up was 50.6 months. The local and global Cobb angle improved from the preoperative average of 82.0° and 54.9° to an average of 35.6° and 29.8°, respectively, at the time of final follow-up. The C2-7 sagittal vertical axis averaged 5.8 mm before surgery and 8.9 mm at the final follow-up. The average T1 slope was -12.3° before surgery and -1.6° at the final follow-up. The visual analog scale score, Japanese Orthopaedic Association score, and Neck Disability Index improved significantly, and the overall satisfaction rate was 90.0%. One death and 4 instrumentation failures occurred, 3 patients showed progression of the kyphosis, and 2 fusion failures were observed. CONCLUSIONS Surgical correction, specifically the combined anteroposterior procedure, is essential and effective for management of NF-1-related severe dystrophic cervical kyphosis. However, high incidences of instrumentation failure, kyphosis progression, and fusion failure were observed. NF-1-related continuous skeletal dystrophy caused by multiple metabolic factors remarkably affected the midterm outcomes. Early prevention and targeted pharmacotherapy may be necessary.
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Affiliation(s)
- Jingcheng Wang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Congcong Liu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China; Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Cheng Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan, P.R. China
| | - Jing Li
- Department of Orthopedics, Qinghai Red Cross Hospital, Xining, Qinghai, P.R. China
| | - Guohua Lv
- Department of Emergency Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Jiancuo A
- Department of Orthopedics, Qinghai Red Cross Hospital, Xining, Qinghai, P.R. China
| | - Youwen Deng
- Department of Emergency Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China; Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China.
| | - Wenjun Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan, P.R. China
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