{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T09:14:11Z","timestamp":1775207651481,"version":"3.50.1"},"reference-count":8,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\n Background:<\/jats:title>\n Ossification of the ligamentum flavum (OLF) is characterized by heterotopic bone formation within the ligamentum flavum. It typically causes progressive, chronic spinal canal stenosis, but only rarely acute cauda equina syndromes.<\/jats:p>\n <\/jats:sec>\n \n Case Description:<\/jats:title>\n A 29-year-old patient presented with cauda equina syndrome characterized by saddle numbness, urinary incontinence, and bilateral foot drop. She underwent an urgent decompression for a disc herniation, at which time the surgeons encountered severe OLF, causing cauda equina compression. After performing a computed tomography scan to assess the extent of ossification, the patient was taken back to the operating room for completion of the original laminectomy with extension to an adjacent level. Her postoperative recovery was uneventful.<\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n Here, a 29-year-old presented with cauda equina syndrome attributed to a herniated lumbar disc and single-level OLF.<\/jats:p>\n <\/jats:sec>","DOI":"10.25259\/sni_185_2026","type":"journal-article","created":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T08:17:20Z","timestamp":1775204240000},"page":"197","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Case of ossification of the ligamentum flavum causing cauda equina compression"],"prefix":"10.25259","volume":"17","author":[{"given":"Joseph","family":"Graham","sequence":"first","affiliation":[{"name":"Department of Medicine, East Kent Hospitals University Foundation Trust, Ashford, United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Cato-Addison","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Royal Sussex County Hospital, Brighton, United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2026,4,3]]},"reference":[{"key":"10.25259\/SNI_185_2026\/ref-1","doi-asserted-by":"crossref","first-page":"158","DOI":"10.22603\/ssrr.1.2016-0031","article-title":"Ossification of the ligamentum flavum","volume":"1","author":"Hirabayashi","year":"2017","journal-title":"Spine Surg Relat Res"},{"key":"10.25259\/SNI_185_2026\/ref-2","doi-asserted-by":"crossref","first-page":"306","DOI":"10.1097\/BRS.0b013e3181624535","article-title":"Symptomatic ossification of the ligamentum flavum at the lumbar spine: A retrospective study","volume":"33","author":"Pantazis","year":"2008","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_185_2026\/ref-3","doi-asserted-by":"crossref","first-page":"e0039","DOI":"10.2106\/JBJS.CC.18.00039","article-title":"Acute presentation of lumbar spinal stenosis due to ossified ligamentum flavum: The possible role of spondylolisthesis: A case report","volume":"9","author":"Perna","year":"2019","journal-title":"JBJS Case Connect"},{"key":"10.25259\/SNI_185_2026\/ref-4","doi-asserted-by":"crossref","first-page":"5386","DOI":"10.3390\/jcm11185386","article-title":"Research history, pathology and epidemiology of ossification of the posterior longitudinal ligament and ligamentum flavum","volume":"11","author":"Sakai","year":"2022","journal-title":"J Clin Med"},{"key":"10.25259\/SNI_185_2026\/ref-5","article-title":"Gray\u2019s Anatomy: The Anatomical Basis of Clinical Practice","author":"Standring","year":"2020","edition":"42nd ed"},{"key":"10.25259\/SNI_185_2026\/ref-6","doi-asserted-by":"crossref","first-page":"307","DOI":"10.22603\/ssrr.2020-0111","article-title":"Intradural disc herniation concurrent with ossification of the posterior longitudinal ligament, ossification of the ligamentum flavum, and cauda equina schwannoma at the L1-L2 level: A case report","volume":"5","author":"Tanabe","year":"2020","journal-title":"Spine Surg Relat Res"},{"key":"10.25259\/SNI_185_2026\/ref-7","doi-asserted-by":"crossref","first-page":"E401","DOI":"10.1097\/01.BRS.0000092347.32845.43","article-title":"Radiculopathy due to ossification of the yellow ligament at the lower lumbar spine","volume":"28","author":"Yano","year":"2003","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_185_2026\/ref-8","doi-asserted-by":"crossref","first-page":"202","DOI":"10.25259\/SNI_319_2021","article-title":"Cauda equina syndrome due to lumbar disc herniation and ossification of the yellow ligament","volume":"12","author":"Yunoki","year":"2021","journal-title":"Surg Neurol Int"}],"container-title":["Surgical Neurology International"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/surgicalneurologyint.com\/case-of-ossification-of-the-ligamentum-flavum-causing-cauda-equina-compression\/","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/surgicalneurologyint.com\/surgicalint-articles\/case-of-ossification-of-the-ligamentum-flavum-causing-cauda-equina-compression\/","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T08:17:21Z","timestamp":1775204241000},"score":1,"resource":{"primary":{"URL":"http:\/\/surgicalneurologyint.com\/surgicalint-articles\/case-of-ossification-of-the-ligamentum-flavum-causing-cauda-equina-compression\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,4,3]]},"references-count":8,"alternative-id":["10.25259\/SNI_185_2026"],"URL":"https:\/\/doi.org\/10.25259\/sni_185_2026","relation":{},"ISSN":["2152-7806","2229-5097"],"issn-type":[{"value":"2152-7806","type":"electronic"},{"value":"2229-5097","type":"print"}],"subject":[],"published":{"date-parts":[[2026,4,3]]},"article-number":"197"}}