{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T19:46:55Z","timestamp":1776109615886,"version":"3.50.1"},"reference-count":12,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,3]]},"abstract":"<jats:p>Closed reduction is an effective treatment method for developmental dysplasia of the hip (DDH). Still, there are certain controversial issues regarding the timing of the treatment. In this study, we investigated the results of closed reduction and Outcomes of 302 hips of 218 patients treated with closed reduction have been analyzed retrospectively. One hundred fifty-two hips that had ossific nucleus [ossific nucleus (+)] during reduction have been compared with 150 hips that had no ossific nucleus [ossific nucleus (\u2212)] during reduction. Also, the patients have been divided into two groups, the patients treated with closed reduction before the sixth month and the patients treated with closed reduction after the sixth month. Groups have been compared between themselves in terms of avascular necrosis (AVN) and redislocation. Seventy-seven of the 112 hips treated with closed reduction in the first six months were ossific nucleus (\u2212), and AVN has been noted in 5 (6%) patients. However, although no AVN has been seen in any of the 35 ossific nucleus (+) hips, no statistically significant difference has been found between two groups. Seventy-three of the 190 hips treated with closed reduction after the sixth month were ossific nucleus (\u2212), and AVN has been seen in 13 (17%) of these hips. AVN has been seen in 9 (7%) of the 117 ossific nucleus (+) hips. The AVN ratio was found significantly lower in the ossific nucleus (+) hips (<jats:italic toggle=\"yes\">P<\/jats:italic>\u2009&lt;\u20090.034). Although the presence of ossific nucleus does not provide extra protection against AVN in before the sixth month, the presence of ossific nucleus is protective against AVN after the sixth month.<\/jats:p>","DOI":"10.1097\/bpb.0000000000000752","type":"journal-article","created":{"date-parts":[[2020,5,26]],"date-time":"2020-05-26T04:11:03Z","timestamp":1590466263000},"page":"126-131","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":5,"title":["Impact of presence of ossific nucleus on results of closed reduction in treatment of developmental dysplasia of the hip (302 hips)"],"prefix":"10.1097","volume":"30","author":[{"given":"Sinan","family":"Yilar","sequence":"first","affiliation":[{"name":"Department of Medicine, Ataturk Universitesi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mehmet","family":"K\u00f6se","sequence":"additional","affiliation":[{"name":"Department of Medicine, Ataturk Universitesi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kutsi","family":"Tuncer","sequence":"additional","affiliation":[{"name":"Department of Medicine, Ataturk Universitesi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Orhan","family":"Karsan","sequence":"additional","affiliation":[{"name":"Department of Medicine, Ataturk Universitesi"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Murat","family":"Topal","sequence":"additional","affiliation":[{"name":"Department of Orthopedics and Traumatology, Kastamonu University Medical Faculty, Kastamonu, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naci","family":"Ezirmik","sequence":"additional","affiliation":[{"name":"Department of Medicine, Ataturk Universitesi"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","published-online":{"date-parts":[[2020,5,22]]},"reference":[{"key":"R1-20250526","doi-asserted-by":"crossref","first-page":"e557","DOI":"10.1542\/peds.2005-1597","article-title":"Screening for developmental dysplasia of the hip: a systematic literature review for the US Preventive Services Task Force.","volume":"117","author":"Shipman","year":"2006","journal-title":"Pediatrics"},{"key":"R3-20250526","doi-asserted-by":"crossref","first-page":"2838","DOI":"10.1007\/s11999-011-1801-6","article-title":"The presence of an ossific nucleus does not protect against osteonecrosis after treatment of developmental dysplasia of the hip.","volume":"469","author":"Roposch","year":"2011","journal-title":"Clin Orthop Relat Res"},{"key":"R4-20250526","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1007\/s00264-017-3685-x","article-title":"Long-term results of closed reduction for developmental dislocation of the hip in children of walking age under eighteen months old.","volume":"42","author":"Cha","year":"2018","journal-title":"Int Orthop"},{"key":"R5-20250526","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1097\/BPO.0000000000000895","article-title":"Closed reduction for developmental dysplasia of the hip: early-term results from a prospective, multicenter cohort.","volume":"39","author":"Sankar","year":"2019","journal-title":"J Pediatr Orthop"},{"key":"R6-20250526","first-page":"458","article-title":"Indications and time planning for operative interventions in hip dysplasia in child and adulthood.","volume":"123","author":"T\u00f6nnis","year":"1985","journal-title":"Z Orthop Ihre Grenzgeb"},{"key":"R7-20250526","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1007\/s11832-016-0743-7","article-title":"Risk factors for avascular necrosis after closed reduction for developmental dysplasia of the hip.","volume":"10","author":"Schur","year":"2016","journal-title":"J Child Orthop"},{"key":"R8-20250526","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1097\/BPB.0b013e32835ec690","article-title":"Treatment of developmental dislocation of hip: does changing the hip abduction angle in the hip spica affect the rate of avascular necrosis of the femoral head?","volume":"22","author":"Madhu","year":"2013","journal-title":"J Pediatr Orthop B"},{"key":"R9-20250526","doi-asserted-by":"crossref","first-page":"1166","DOI":"10.1007\/s11999-015-4590-5","article-title":"Is age or surgical approach associated with osteonecrosis in patients with developmental dysplasia of the hip? A meta-analysis.","volume":"474","author":"Novais","year":"2016","journal-title":"Clin Orthop Relat Res"},{"key":"R11-20250526","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1097\/BPB.0000000000000111","article-title":"Early predictors of acetabular growth after closed reduction in late detected developmental dysplasia of the hip.","volume":"24","author":"Li","year":"2015","journal-title":"J Pediatr Orthop B"},{"key":"R12-20250526","doi-asserted-by":"crossref","first-page":"1719","DOI":"10.2106\/00004623-199812000-00001","article-title":"The prognostic importance of the ossific nucleus in the treatment of congenital dysplasia of the hip.","volume":"80","author":"Luhmann","year":"1998","journal-title":"J Bone Joint Surg Am"},{"key":"R13-20250526","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1097\/BPB.0b013e32832fc8ca","article-title":"Ossification of the femoral head at closed reduction for developmental dysplasia of the hip and its influence on the long-term outcome.","volume":"19","author":"Cooke","year":"2010","journal-title":"J Pediatr Orthop B"},{"key":"R14-20250526","doi-asserted-by":"crossref","first-page":"239","DOI":"10.2106\/00004623-200302000-00009","article-title":"Reduction of a dislocation of the hip due to developmental dysplasia: implications for the need for future surgery.","volume":"85","author":"Luhmann","year":"2003","journal-title":"J Bone Joint Surg Am"}],"container-title":["Journal of Pediatric Orthopaedics B"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.lww.com\/10.1097\/BPB.0000000000000752","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,26]],"date-time":"2025-05-26T22:05:19Z","timestamp":1748297119000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.lww.com\/10.1097\/BPB.0000000000000752"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,5,22]]},"references-count":12,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2021]]}},"URL":"https:\/\/doi.org\/10.1097\/bpb.0000000000000752","relation":{},"ISSN":["1060-152X"],"issn-type":[{"value":"1060-152X","type":"print"}],"subject":[],"published":{"date-parts":[[2020,5,22]]}}}