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Yuan C, Guan J, Du Y, Fang Z, Wang X, Yao Q, Zhang C, Liu Z, Wang K, Duan W, Wang X, Wang Z, Wu H, Jian F. Neurological deterioration after posterior fossa decompression for adult syringomyelia: Proposal for a summarized treatment algorithm. Front Surg 2022; 9:968906. [PMID: 36189393 PMCID: PMC9520238 DOI: 10.3389/fsurg.2022.968906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundPatients with syringomyelia who present with new neurological symptoms after posterior fossa decompression (PFD) are not uncommon. However, systematic reports on different pathologies are few in the literature.ObjectiveThe purpose of this study was to summarize our experience for failed PFD.MethodsBetween January 2015 and December 2019, 85 consecutive failed PFD patients were identified. The neurological courses were summarized with Klekamp J (KJ) or mJOA score system for all patients. Long-term results were summarized with Kaplan-Meier method.ResultsTwenty-eight consecutive patients underwent FMDD (Foramen magnum and foramen of Magendie dredging) (Group I), extradural PFD and manipulation of tonsil was significantly associated with lower failure rates. Twenty patients underwent craniocervical fixation (Group II), nine underwent local spinal segment decompression (Group III), six underwent CSF diversion procedures, and one were treated for persistent pain by radiofrequency. Neuropathic pain was most significantly improved in Group I while swallowing improved in Group II within 1 year after the surgery. In the long term, late postoperative deterioration-free possibility in Group II was better than in Group I. All patients in Group III improved (P = 0.0088). Six cases of CSF diversion procedures were relieved in a short time. Pain in one patient persisted after PFD, and trial of radiofrequency failed.ConclusionNot only does the recurrent cerebrospinal fluid flow obstruct the foramen magnum, but also spinal pathologies and craniocervical instabilities may occur. This study provides the largest summarized clinical experience that may assist surgeons with different therapeutic decisions for failed PFD.
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Affiliation(s)
- Chenghua Yuan
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Jian Guan
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Yueqi Du
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Zeyu Fang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Xinyu Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Qingyu Yao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Can Zhang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Zhenlei Liu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Kai Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Wanru Duan
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Xingwen Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Zuowei Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Hao Wu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
| | - Fengzeng Jian
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,
- Spine Center, China International Neuroscience Institute (CHINA-INI), Beijing, China,
- Laboratory of Spinal Cord Injury and Functional Reconstruction, Xuanwu Hospital, Capital Medical University, Beijing, China
- Research Center of Spine and Spinal Cord, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
- National Center for Neurological Disorders, Beijing, China
- Correspondence: Fengzeng Jian
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Zhu Z, Sha S, Sun X, Liu Z, Yan H, Zhu W, Wang Z, Qiu Y. Tapering of the cervical spinal canal in patients with distended or nondistended syringes secondary to Chiari type I malformation. AJNR Am J Neuroradiol 2014; 35:2021-6. [PMID: 24831593 DOI: 10.3174/ajnr.a3967] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Steeper tapering of the cervical spinal canal as documented in recent studies is thought to have a role in the pathophysiology of Chiari malformation-associated syringomyelia. This study aimed to determine whether taper ratio of the cervical spinal canal differs between patients with distended and nondistended syringes. MATERIALS AND METHODS Seventy-seven adolescents (10-18 years) were divided into 2 groups: 44 with distended syrinx and 33 with nondistended syrinx. On T2-weighted MR images, anteroposterior diameter of the spinal canal was measured at each cervical level, and a linear trend line was fit by least squares regression to calculate the taper ratio. Taper ratios were compared between the 2 groups and further evaluated with respect to age and sex. RESULTS In the nondistended group ND, the taper ratios for C1-C7, C1-C4, and C4-C7 averaged -0.73 ± 0.57, -1.61 ± 0.98, and -0.04 ± 0.54, respectively, all of which were significantly steeper than those observed in the distended group (P = .001, .004, and .033, respectively). Regarding the average diameters plotted by cervical level, the narrowest region of the canal was found to occur at C4 in both groups. In addition, no significant differences in taper ratio were noted between males and females, or between older (>14 years) and younger patients (≤14 years). CONCLUSIONS Taper ratios of the cervical spinal canal were found to be different between patients with distended and nondistended syringes, indicating a reciprocal interaction between the syrinx and the cervical spine anatomy.
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Affiliation(s)
- Z Zhu
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - S Sha
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - X Sun
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Z Liu
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - H Yan
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - W Zhu
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Z Wang
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Y Qiu
- From the Department of Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
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