{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T20:42:28Z","timestamp":1693255348600},"reference-count":25,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"2","license":[{"start":{"date-parts":[[2013,2,1]],"date-time":"2013-02-01T00:00:00Z","timestamp":1359676800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/online.boneandjoint.org.uk\/TDM"}],"content-domain":{"domain":["online.boneandjoint.org.uk"],"crossmark-restriction":true},"short-container-title":["The Bone &amp; Joint Journal"],"published-print":{"date-parts":[[2013,2]]},"abstract":"<jats:p> Several authors have suggested that the final five weeks of gestation are a critical period for the development of the hip. In order to test the hypothesis that gestational age at birth may influence the development of the hip joint, we analysed the sonographic findings in 1992\u00a0hips (in 996 term newborns) with no risk factor for developmental dysplasia of the hip. The 996 infants were born at a mean gestational age of 39 weeks (37 to 41). <\/jats:p><jats:p> The mean bony roof angle (\u03b1), cartilage roof angle (\u03b2) and the distribution of the type of hip were compared between the 37th, 38th, 39th, 40th and 41st birth week groups. There was a significant difference in the distribution of type of hip between the different birth week groups (p &lt; 0.001), but no significant difference between the \u03b1 angles of all groups (p\u00a0=\u00a00.32). There was no correlation between birth week and roof angle (p = 0.407 and p\u00a0=\u00a00.291, respectively) and no significant correlation between birth weight and roof angle (p = 0.735 and p = 0.132, respectively). <\/jats:p><jats:p> The maturity of the infant hip, as assessed sonographically, does not appear to be affected by gestational age, and the fetal development of the acetabular roof appears to plateau from 37 weeks. <\/jats:p><jats:p> Cite this article: Bone Joint J 2013;95-B:266\u201370. <\/jats:p>","DOI":"10.1302\/0301-620x.95b2.30798","type":"journal-article","created":{"date-parts":[[2013,1,30]],"date-time":"2013-01-30T17:18:30Z","timestamp":1359566310000},"page":"266-270","update-policy":"http:\/\/dx.doi.org\/10.1302\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["The effect of gestational age on sonographic screening of the hip in term infants"],"prefix":"10.1302","volume":"95-B","author":[{"given":"S.","family":"Uludag","sequence":"first","affiliation":[{"name":"American Hospital, Department\rof Orthopaedics and Traumatology, Guzelbahce\rsok, No:20, 34365, Nisantasi, Istanbul, Turkey."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Seyahi","sequence":"additional","affiliation":[{"name":"American Hospital, Department\rof Orthopaedics and Traumatology, Guzelbahce\rsok, No:20, 34365, Nisantasi, Istanbul, Turkey."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. M.","family":"Orak","sequence":"additional","affiliation":[{"name":"Zeynep Kamil Education and Research Hospital, Department\rof Orthopaedics and Traumatology, Istanbul, Turkey."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. G.","family":"Bilgili","sequence":"additional","affiliation":[{"name":"Sadi Konuk Education and Research Hospital, Department\rof Orthopaedics and Traumatology, Istanbul, Turkey."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.","family":"Colakoglu","sequence":"additional","affiliation":[{"name":"American Hospital, Department\rof Radiology, Guzelbahce sok, No:20, 34365, Nisantasi, Istanbul, Turkey."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Demirhan","sequence":"additional","affiliation":[{"name":"Medical Faculty of Koc University, School\rof Medicine, Istanbul, Turkey."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"42","reference":[{"key":"r1","unstructured":"Martinoli C, Garello I, Marchetti A, et al. Hip ultrasound. 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