{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,30]],"date-time":"2026-05-30T00:24:45Z","timestamp":1780100685022,"version":"3.54.0"},"reference-count":13,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2017,9,1]],"date-time":"2017-09-01T00:00:00Z","timestamp":1504224000000},"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":["J Orthop Surg (Hong Kong)"],"published-print":{"date-parts":[[2017,9,1]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>This study aimed to present radiologic analysis of minimal safe distance (MSD) and optimal screw angle (OSA) that enables to fix screws in a lateral mass safely without facet joint violation in open-door laminoplasty using a plate.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>A retrospective analysis was made of 22 patients (male: 17; female: 5), average age 62 years. Seventy-nine lateral mass screws were fixed among a total of 158 screws. MSD that doesn\u2019t allow 5-mm screws to violate a facet joint was measured for C3\u2013C7 and a comparative analysis was performed. If the MSD is not secured, the OSA to be given to the cephalad direction is calculated to avoid violation of the facet joint.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The screws violating inferior facet joints accounted for 34.1% of the screws fixed in inferior lateral mass. Joint surface to distal mini-screw distances were 3.18 \u00b1 1.46 mm and 4.75 \u00b1 1.71 mm in groups of facet joint violation and non-facet violation (FV), respectively ( p = 0.001). When 5-mm screws were inserted into a lateral mass, MSD was 4.39 \u00b1 0.83 mm. The average MSD of C3, C4, and C5 was 4.05 \u00b1 0.78 mm, 4.10 \u00b1 0.70 mm, and 4.26 \u00b1 0.74 mm, respectively. There was no significant differences among levels ( p &gt; 0.05). The average MSD of C6 and C7 was 4.92 \u00b1 0.81 mm and 4.80 \u00b1 0.96 mm, respectively, showing significant differences from those of C3, C4, and C5 ( p &lt; 0.05). If 6 mm of the MSD isn\u2019t secured, OSA showed in the cephalad direction of 11.5\u00b0 for 5 mm and 22\u00b0 for 4 mm approximately.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>We suggest that mini-screw on lateral mass can be fixed safely without FV, if they are fixed at MSD of 6 mm from a joint surface. Facet joint violation doesn\u2019t occur if an OSA is given in the cephalad direction in case of not enough MSD for mini-screws.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/2309499017736562","type":"journal-article","created":{"date-parts":[[2017,10,25]],"date-time":"2017-10-25T23:16:04Z","timestamp":1508973364000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Radiological analysis of minimal safe distance and optimal screw angle to avoid facet violation in open-door laminoplasty using precontoured plate"],"prefix":"10.1177","volume":"25","author":[{"given":"Woo-Kie","family":"Min","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Il","family":"Seo","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sang-Bong","family":"Na","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young-Seo","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji-Yeon","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2017,10,25]]},"reference":[{"key":"bibr1-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e3182498434"},{"key":"bibr2-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-198107000-00005"},{"key":"bibr3-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e3181fea49c"},{"key":"bibr4-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-016-4785-9"},{"key":"bibr5-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000002292"},{"key":"bibr6-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/BSD.0000000000000131"},{"key":"bibr7-2309499017736562","doi-asserted-by":"publisher","DOI":"10.3171\/2013.4.FOCUS1394"},{"key":"bibr8-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-199704150-00022"},{"key":"bibr9-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1186\/s13018-014-0049-8"},{"issue":"11","key":"bibr10-2309499017736562","first-page":"1324","volume":"27","author":"Chen H","year":"2013","journal-title":"Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi"},{"key":"bibr11-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-199602150-00012"},{"key":"bibr12-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1016\/j.spinee.2011.07.026"},{"key":"bibr13-2309499017736562","doi-asserted-by":"publisher","DOI":"10.1016\/j.jocn.2011.09.021"}],"container-title":["Journal of Orthopaedic Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/2309499017736562","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/2309499017736562","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/2309499017736562","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:24:19Z","timestamp":1777595059000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/2309499017736562"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,9,1]]},"references-count":13,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2017,9,1]]}},"alternative-id":["10.1177\/2309499017736562"],"URL":"https:\/\/doi.org\/10.1177\/2309499017736562","relation":{},"ISSN":["1022-5536","2309-4990"],"issn-type":[{"value":"1022-5536","type":"print"},{"value":"2309-4990","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,9,1]]},"article-number":"2309499017736562"}}