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Ossification of Posterior Longitudinal Ligament in Cervical Spine and Its Association With Ossified Lesions in the Whole Spine: A Cross-Sectional Study of 2500 CT Scans
| Content Provider | SAGE Publishing |
|---|---|
| Author | Singh, Neerav Anand Shetty, Ajoy Prasad Jakkepally, Sridhar Kumarasamy, Dinesh Kanna, Rishi Mukesh Rajasekaran, Shanmuganathan |
| Copyright Year | 2021 |
| Abstract | Study Design:A retrospective study.Objective:To identify the prevalence and characteristics of ossified posterior longitudinal ligament (OPLL) in the cervical spine and its association with other spinal ligament ossifications.Method:This study is a retrospective review of whole spine CT scans of polytrauma patients from 2009 to 2018. Patients were screened for cervical OPLL (C-OPLL), thoracolumbar OPLL, thoracic ossified ligamentum flavum (OLF), cervical and thoracolumbar ossified anterior longitudinal ligament (C-OALL AND T-L OALL), ossified nuchal ligament (ONL) and, diffuse idiopathic skeletal hyperostosis (DISH) using CT scans. Their prevalence and distributions were assessed using statistical tools. Chi-square tests were used to determine statistical association between the categorical parameters.Results:Out of 2500 patients, 128 had C-OPLL with a prevalence rate of 5.12% with mean age of 55.89 year. The most commonly affected level was C5, followed by C6, and C4. The segmental OPLL was highest in number (77.7%), followed by localized type (14.8%). While the prevalence rate of thoracic OPLL was 0.56%, OLF was 9.9%. Ossifications that coexisted along with C-OPLL were thoracic OPLL (7.81%), thoracic OLF (36.71%), cervical OALL (29.68%), thoracolumbar OALL (37.5%), DISH (27.34%) and, ONL (7.03%).Conclusion:Our study indicated a prevalence rate of 5.12% for C-OPLL with a predominance of segmental OPLL (77.7%). Among these patients, approximately 36% had coexisting thoracic OLF. In patients with symptomatic OPLL induced cervical myelopathy, MRI analysis of whole spine with relevant CT correlation may help in detecting additional ossification sites of compression. |
| Related Links | https://journals.sagepub.com/doi/pdf/10.1177/2192568221993440?download=true |
| Starting Page | 122 |
| Ending Page | 132 |
| Page Count | 11 |
| ISSN | 21925682 |
| Issue Number | 1 |
| Volume Number | 13 |
| Journal | Global Spine Journal (GSJ) |
| e-ISSN | 21925690 |
| DOI | 10.1177/2192568221993440 |
| Language | English |
| Publisher | Sage Publications CA |
| Publisher Date | 2021-02-11 |
| Publisher Place | Los Angeles |
| Access Restriction | Open |
| Rights Holder | © The Author(s) 2021 |
| Subject Keyword | diffuse idiopathic skeletal hyperostosis ossified ligamentum flavum ossified posterior longitudinal ligament ossified anterior longitudinal ligament cervical myelopathy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Neurology (clinical) Surgery |
