{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T21:22:47Z","timestamp":1791840167422,"version":"4.3.4"},"reference-count":25,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2008,8,1]],"date-time":"2008-08-01T00:00:00Z","timestamp":1217548800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Children's Orthopaedics"],"published-print":{"date-parts":[[2008,8]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>There is not always a good outcome after a femoral varus osteotomy (FVO) in those with Legg-Calv\u00e9-Perthes disease (LCPD), even when the severity warrants surgical treatment. The purpose of this study was to find arthrographic indicators for decision making regarding the likely surgical outcome of a FVO.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We used an image of an abduction position during preoperative arthrography under general anesthesia that simulated the post-operative relationship between the femoral head and the acetabulum. In the image, we defined two indicators of how deeply the deformed epiphysis was contained within the acetabulum: an acetabular head index in abduction and an epiphyseal slip-in index. Finding the contact point between the top of epiphysis and acetabulum was the key for the epiphyseal slip-in index measurement. In 37 patients (38 hips) who underwent FVOs based on our inclusion criteria, these two indices were measured retrospectively and were analyzed for a correlation with surgical outcome. Surgical outcome was evaluated using a combination of three factors: sphericity of the femoral head (Stulberg's classification), acetabular cover (acetabular head index), and the slope of acetabular roof.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The outcome was acceptable in 20 hips (52.6%) and unacceptable in18 hips (47.4%). There was a statistically significance difference in epiphyseal slip-in index between the acceptable group (21.9 \u00b1 2.8%) and the unacceptable group (15.0 \u00b1 4.4%) ( P &lt; 0.0001). An index of 20% or more determined a safe zone for predicting an acceptable outcome with 80% sensitivity, 89% specificity, and a 7.2 likelihood ratio. However, the acetabular head index in abduction showed no such statistical significance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>In this study, we found that the epiphyseal slip-in index was a reliable indicator for predicting the effectiveness of a FVO. It is worth measuring this index when a surgeon is considering a FVO for a patient with severe LCPD. (Level of Evidence Level III.)<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s11832-008-0120-2","type":"journal-article","created":{"date-parts":[[2008,7,25]],"date-time":"2008-07-25T04:09:11Z","timestamp":1216958951000},"page":"261-267","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["Arthrographic indicators for decision making about femoral varus osteotomy in Legg-Calv\u00e9-Perthes disease"],"prefix":"10.1177","volume":"2","author":[{"given":"Makoto","family":"Kamegaya","sequence":"first","affiliation":[{"name":"Division of Orthopaedic Surgery, Chiba Children's Hospital, 579-1 Heta-chou, Midori-ku, Chiba City, 266-0007, Chiba Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Saisu","sequence":"additional","affiliation":[{"name":"Division of Orthopaedic Surgery, Chiba Children's Hospital, 579-1 Heta-chou, Midori-ku, Chiba City, 266-0007, Chiba Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Makoto","family":"Takazawa","sequence":"additional","affiliation":[{"name":"Division of Orthopaedic Surgery, Chiba Children's Hospital, 579-1 Heta-chou, Midori-ku, Chiba City, 266-0007, Chiba Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junichi","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Chiba University School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba City, 260-0856, Chiba Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2008,8,1]]},"reference":[{"key":"bibr1-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01241398-198811000-00009"},{"key":"bibr2-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01241398-199305000-00001"},{"key":"bibr3-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.86B8.14458"},{"key":"bibr4-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.53B1.37"},{"key":"bibr5-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01241398-199203000-00001"},{"key":"bibr6-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01.blo.0000180601.23357.d9"},{"key":"bibr7-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01241398-199901000-00017"},{"key":"bibr8-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01202412-199710000-00001"},{"key":"bibr9-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.58B1.1270493"},{"key":"bibr10-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01202412-200503000-00005"},{"key":"bibr11-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01202412-200501000-00002"},{"key":"bibr12-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01241398-200103000-00013"},{"key":"bibr13-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-198007000-00016"},{"key":"bibr14-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198163070-00006"},{"key":"bibr15-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.3109\/ort.1953.24.suppl-12.01"},{"key":"bibr16-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-195032040-00004"},{"key":"bibr17-s11832-008-0120-2","unstructured":"Stulberg SD, Harris WH (1974) Acetabular dysplasia and development of osteoarthritis of hip. In: Proceeding of the second open scientific meeting of the hip society. Mosby, St. Louis, pp 82\u201393"},{"key":"bibr18-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200410000-00001"},{"key":"bibr19-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-197860040-00005"},{"key":"bibr20-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198365070-00004"},{"key":"bibr21-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01202412-200010000-00008"},{"key":"bibr22-s11832-008-0120-2","first-page":"110","volume":"11","author":"Bennett JT","year":"2002","journal-title":"J Pediatr Orthop B"},{"key":"bibr23-s11832-008-0120-2","first-page":"158","volume":"13","author":"Segev E","year":"2004","journal-title":"J Pediatr Orthop B"},{"key":"bibr24-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/01241398-199101000-00005"},{"key":"bibr25-s11832-008-0120-2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-198007000-00013"}],"container-title":["Journal of Children's Orthopaedics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1007\/s11832-008-0120-2","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s11832-008-0120-2\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1007\/s11832-008-0120-2","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1007\/s11832-008-0120-2","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T15:07:50Z","timestamp":1777388870000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1007\/s11832-008-0120-2"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,8]]},"references-count":25,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2008,8]]}},"alternative-id":["10.1007\/s11832-008-0120-2"],"URL":"https:\/\/doi.org\/10.1007\/s11832-008-0120-2","relation":{},"ISSN":["1863-2521","1863-2548"],"issn-type":[{"value":"1863-2521","type":"print"},{"value":"1863-2548","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,8]]}}}