{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T11:12:24Z","timestamp":1780917144495,"version":"3.54.1"},"reference-count":16,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2015,6,1]],"date-time":"2015-06-01T00:00:00Z","timestamp":1433116800000},"content-version":"vor","delay-in-days":31,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2015,5]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>The present retrospective study was performed to assess the anatomical features of the pedicle in isthmic spondylolisthesis and to correlate this with degree of slip.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Twenty\u2010six patients with isthmic spondylolytic spondylolisthesis were studied. Relevant patient variables, length, width, height of the <jats:styled-content style=\"fixed-case\">L<\/jats:styled-content><jats:sub>5<\/jats:sub> pedicle, and the product of height and angle between pedicle and vertebral midline were measured. The length of the posterior compartment of the pedicle was calculated as the product of the pedicle length and angle.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>With measurements comparable to those reported in previous publications, the <jats:styled-content style=\"fixed-case\">L<\/jats:styled-content><jats:sub>5<\/jats:sub> pedicle was found to be longer, and the height and width of the body shorter, than published values for patients without spondylolysis. The difference between the length of the posterior compartment of the pedicle and height of body is significantly proportional to the degree of slip and may reflect an adaptive response for stabilizing the vertebral body with posterior elements.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The pedicle anatomy was found to be altered in patients with <jats:styled-content style=\"fixed-case\">L<\/jats:styled-content><jats:sub>5<\/jats:sub><jats:styled-content style=\"fixed-case\">S<\/jats:styled-content><jats:sub>1<\/jats:sub> spondylolytic spondylolisthesis. These anatomical changes have implications for surgeons performing fusion operations in terms of length of screw, landmarks used and entry approach.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.12173","type":"journal-article","created":{"date-parts":[[2015,6,1]],"date-time":"2015-06-01T06:44:26Z","timestamp":1433141066000},"page":"108-111","source":"Crossref","is-referenced-by-count":7,"title":["Pedicle Length and Degree of Slip in Lumbosacral Isthmic Spondylolisthesis"],"prefix":"10.1111","volume":"7","author":[{"given":"Phoebe G","family":"Matthews","sequence":"first","affiliation":[{"name":"Westmead Hospital  Sydney New South Wales Australia"},{"name":"University of Sydney  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin","family":"Phan","sequence":"additional","affiliation":[{"name":"Westmead Hospital  Sydney New South Wales Australia"},{"name":"University of Sydney  Sydney New South Wales Australia"},{"name":"University of New South Wales  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Prashanth J","family":"Rao","sequence":"additional","affiliation":[{"name":"Westmead Hospital  Sydney New South Wales Australia"},{"name":"University of New South Wales  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan R","family":"Ball","sequence":"additional","affiliation":[{"name":"Royal North Shore Hospital  Sydney New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,6]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e31818edcfd"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0899-3467(07)60153-0"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-007-0543-3"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-200002010-00014"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-012-2439-8"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-013-3111-z"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e3181574286"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-198801000-00007"},{"key":"e_1_2_5_10_1","first-page":"431","article-title":"Spondylolisthesis and spondylolysis","volume":"57","author":"Hu SS","year":"2008","journal-title":"Instr Course Lect"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.bsd.0000133064.20466.88"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-199701150-00016"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-200207150-00011"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e3181de8b72"},{"key":"e_1_2_5_15_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-010-1660-y"},{"key":"e_1_2_5_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/ca.21203"},{"key":"e_1_2_5_17_1","first-page":"112","article-title":"Systematic review and meta\u2010analysis: techniques and a guide for the academic surgeon","volume":"4","author":"Phan K","year":"2015","journal-title":"Ann Cardiothorac Surg"}],"container-title":["Orthopaedic Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fos.12173","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/os.12173","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,5]],"date-time":"2023-10-05T14:11:38Z","timestamp":1696515098000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/os.12173"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,5]]},"references-count":16,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2015,5]]}},"alternative-id":["10.1111\/os.12173"],"URL":"https:\/\/doi.org\/10.1111\/os.12173","archive":["Portico"],"relation":{},"ISSN":["1757-7853","1757-7861"],"issn-type":[{"value":"1757-7853","type":"print"},{"value":"1757-7861","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,5]]}}}