{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:54:55Z","timestamp":1786125295720,"version":"build-2736575974"},"reference-count":26,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","license":[{"start":{"date-parts":[[2021,6,7]],"date-time":"2021-06-07T00:00:00Z","timestamp":1623024000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":["Operative Surg.","ONSURG"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>Up to date, surgical outcome of multilevel thoracic ossification of posterior longitudinal ligament (T-OPLL) with high canal occupation ratio is less satisfactory.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBJECTIVE<\/jats:title>\n                    <jats:p>To explore the result of thoracic column antedisplacement and fusion (TCAF) in treatment of multilevel T-OPLL with high canal occupation ratio.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS<\/jats:title>\n                    <jats:p>A total of 5 patients who underwent TCAF procedure for T-OPLL were retrospectively reviewed. Parameters including extent of OPLL, thickness of the maximal OPLL (max-OPLL), maximal canal occupying ratio (max-COR) of OPLL, effective canal diameter (ECD) at the max-OPLL level, antedisplacement distance of thoracic columns, ASIA grades, Japanese Orthopedic Association (JOA) scores, and complications were collected and analyzed at preoperation and the last follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>All patients (5 F, mean age 61.0 yr, mean follow-up 18.0 months) underwent TCAF successfully and no spinal cord injury or cerebrospinal fluid leakage occurred. The mean extent of OPLL was 2.8 vertebral bodies. The mean preoperative thickness of the max-OPLL was 5.9 mm. The average antedisplacement distance of thoracic columns was 5.6 mm. The mean ECD was improved from 6.5 mm to 10.9 mm, and the max-COR was improved from 50.7% to 7.1% at last follow-up. Two patients showed improvement in ASIA grades and JOA scores were significantly improved from 5.6 points to 10.4 points at final follow-up. The overall therapeutic results of 1 patient were classified into good and 4 into fair at last follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION<\/jats:title>\n                    <jats:p>TCAF may be a safe and effective procedure in treatment of multilevel T-OPLL with high canal occupation ratio.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ons\/opab193","type":"journal-article","created":{"date-parts":[[2021,6,7]],"date-time":"2021-06-07T16:32:51Z","timestamp":1623083571000},"page":"118-125","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":5,"title":["Outcome of Thoracic Column Antedisplacement and Fusion in Treatment of Thoracic Myelopathy Caused by Ossification of Posterior Longitudinal Ligament: A Case Series Study"],"prefix":"10.1227","volume":"21","author":[{"given":"Xiangyang","family":"Ma","sequence":"first","affiliation":[{"name":"Department of Spine Surgery, Liuhua Qiao Hospital, Guangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Binbin","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Liuhua Qiao Hospital, Guangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuyue","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Liuhua Qiao Hospital, Guangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Su","family":"Ge","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Liuhua Qiao Hospital, Guangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaobao","family":"Zou","sequence":"additional","affiliation":[{"name":"Department of Spine Surgery, Liuhua Qiao Hospital, 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