{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T15:35:29Z","timestamp":1778254529163,"version":"3.51.4"},"reference-count":32,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2024,10,21]],"date-time":"2024-10-21T00:00:00Z","timestamp":1729468800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2024,10,21]],"date-time":"2024-10-21T00:00:00Z","timestamp":1729468800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Global Spine Journal"],"published-print":{"date-parts":[[2025,5]]},"abstract":"<jats:sec>\n                    <jats:title>Study Design<\/jats:title>\n                    <jats:p>Retrospective multicenter study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To investigate the impact of preoperative cervical range of motion (ROM) on clinical outcomes after posterior decompression for cervical ossification of the posterior longitudinal ligament (OPLL).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We analyzed data from 156 patients with cervical OPLL who underwent posterior decompression and were followed for at least 2 years. Patients were divided into two groups based on preoperative gap ROM, which was a novel indicator representing the difference between flexion and extension ROM: the gROM &lt;0\u00b0 and &gt;0\u00b0 groups, and their outcomes were compared.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>There were no significant differences in patient demographics or surgical details between the gROM &lt;0\u00b0 and &gt;0\u00b0 groups. The gROM &lt;0\u00b0 group exhibited less lordosis in C2-7 angles before and after surgery compared to the gROM &gt;0\u00b0 group. Cervical ROM significantly decreased following posterior decompression regardless of whether preoperative gROM was &lt;0\u00b0 or &gt;0\u00b0. Meanwhile, the incidence of perioperative complications was similar between the two groups. Furthermore, both groups showed significant improvement in Japanese Orthopaedic Association (JOA) scores postoperatively; however, there were no significant group differences in JOA scores, recovery rates, or visual analog scale for neck pain between the two groups at the preoperation and final follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The incidence of perioperative complications and postoperative clinical outcomes were comparable regardless of the magnitude of preoperative cervical gROM. Although cervical ROM decrease postoperatively, posterior decompression for cervical OPLL can offer favorable clinical outcomes irrespective of the preoperative cervical ROM magnitude, consequently.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/21925682241296456","type":"journal-article","created":{"date-parts":[[2024,10,21]],"date-time":"2024-10-21T20:41:27Z","timestamp":1729543287000},"page":"2255-2264","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Effects of Preoperative Cervical Range of Motion on Clinical Outcomes Following Posterior Decompression: A Multicenter Study of Patients With Cervical Ossification of the Posterior Longitudinal Ligament"],"prefix":"10.1177","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0912-7422","authenticated-orcid":false,"given":"Toshiki","family":"Okubo","sequence":"first","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8267-5789","authenticated-orcid":false,"given":"Narihito","family":"Nagoshi","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hitoshi","family":"Kono","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"Keiyu Orthopedic Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kenya","family":"Nojiri","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"Isehara Kyodo Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kentaro","family":"Fukuda","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"Saiseikai Yokohamashi Tobu Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeshi","family":"Ikegami","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"Fussa Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takashi","family":"Tsuji","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"},{"name":"National Hospital Organization Tokyo Medical Center"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yosuke","family":"Horiuchi","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"Japan Community Health Care Organization Saitama Medical Center"},{"name":"Saiseikai Utsunomiya Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takahito","family":"Iga","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"},{"name":"Keiyu Orthopedic Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3857-4985","authenticated-orcid":false,"given":"Kazuki","family":"Takeda","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masahiro","family":"Ozaki","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Suzuki","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Morio","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masaya","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4830-4690","authenticated-orcid":false,"given":"Kota","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Keio University School of Medicine"},{"name":"Keio Spine Research Group (KSRG)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0094-7918","authenticated-orcid":false,"given":"Ken","family":"Ishii","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"New Spine Clinic Tokyo, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junichi","family":"Yamane","sequence":"additional","affiliation":[{"name":"Keio Spine Research Group (KSRG)"},{"name":"National Hospital Organization Murayama Medical Center"},{"name":"Kanagawa Prefectural Police Association Keiyu Hospital"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2024,10,21]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0160117"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0000000000000913"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.O.00397"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.3171\/spi.2002.96.2.0168"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e318241ad33"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e318239cca0"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-198107000-00005"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-200103010-00010"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.3171\/spi.2002.96.1.0122"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e318239cc7e"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.5435\/JAAOS-22-07-420"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0000000000004094"},{"key":"e_1_3_3_14_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.BRS.0000065487.82469.D9"},{"key":"e_1_3_3_15_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-020-62278-3"},{"key":"e_1_3_3_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/2192568218794665"},{"key":"e_1_3_3_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jocn.2020.04.034"},{"key":"e_1_3_3_18_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0000000000002887"},{"key":"e_1_3_3_19_2","doi-asserted-by":"publisher","DOI":"10.3171\/2020.10.SPINE201723"},{"key":"e_1_3_3_20_2","doi-asserted-by":"publisher","DOI":"10.7759\/cureus.5074"},{"key":"e_1_3_3_21_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e3182a7f478"},{"key":"e_1_3_3_22_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-011-1724-7"},{"key":"e_1_3_3_23_2","doi-asserted-by":"publisher","DOI":"10.3171\/2014.8.SPINE131197"},{"key":"e_1_3_3_24_2","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0000000000004706"},{"key":"e_1_3_3_25_2","doi-asserted-by":"publisher","DOI":"10.3171\/2013.4.FOCUS1394"},{"key":"e_1_3_3_26_2","doi-asserted-by":"publisher","DOI":"10.31616\/asj.2022.0408"},{"key":"e_1_3_3_27_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.brs.0000250307.78987.6b"},{"key":"e_1_3_3_28_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.clineuro.2015.04.004"},{"key":"e_1_3_3_29_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-021-04727-1"},{"key":"e_1_3_3_30_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10143-019-01174-5"},{"key":"e_1_3_3_31_2","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000011542"},{"key":"e_1_3_3_32_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.spinee.2012.10.037"},{"key":"e_1_3_3_33_2","doi-asserted-by":"publisher","DOI":"10.3171\/2013.1.SPINE12779"}],"container-title":["Global Spine Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/21925682241296456","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/21925682241296456","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/21925682241296456","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T07:21:13Z","timestamp":1777447273000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/21925682241296456"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,10,21]]},"references-count":32,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2025,5]]}},"alternative-id":["10.1177\/21925682241296456"],"URL":"https:\/\/doi.org\/10.1177\/21925682241296456","relation":{},"ISSN":["2192-5682","2192-5690"],"issn-type":[{"value":"2192-5682","type":"print"},{"value":"2192-5690","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,10,21]]}}}