{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T01:13:38Z","timestamp":1778634818250,"version":"3.51.4"},"reference-count":8,"publisher":"Georg Thieme Verlag KG","issue":"02","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Ultraschall Med"],"published-print":{"date-parts":[[2022,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Purpose\u2002In Middle Europe developmental dysplasia of the hip (DDH) has an incidence of up to 5.9\u200a%. The rate of congenital hip dislocation as the worst complication of a growth disorder of the hip is between 1.5\u200a% and 2.5\u200a%. Among known risk factors of DDH are breech position, multiples, foot deformities and family history. The aim of this retrospective study was to investigate prematurity as a risk factor for developmental dysplasia of the hip (DDH).<\/jats:p><jats:p>\n          Materials and Methods\u2002The hips of 283 infants who were born before the 38th week of gestation or earlier, and those of 377 infants who were born after the 37th week of gestation, none of whom had other risk factors for DDH, were compared using the ultrasound technique according to Graf et al., within the first week after birth. Both hips of all infants were included in the study.<\/jats:p><jats:p>\n          Results\u2002Surprisingly, the difference in alpha angles between the two groups was statistically extremely significant, favoring the preterm infants. Moreover, we found a physiological curve of alpha angle development with a peak after the 31st week of gestation. The incidence of pathological dysplasia was not significantly different in the two groups.<\/jats:p><jats:p>\n          Conclusion\u2002Our results suggest that prematurity is not a predisposing factor for DDH, but rather is protective for hip development.<\/jats:p>","DOI":"10.1055\/a-1161-8984","type":"journal-article","created":{"date-parts":[[2020,7,28]],"date-time":"2020-07-28T23:57:07Z","timestamp":1595980627000},"page":"177-180","source":"Crossref","is-referenced-by-count":14,"title":["Is Prematurity a Protective Factor Against Developmental Dysplasia of the Hip? A Retrospective Analysis of 660 Newborns"],"prefix":"10.1055","volume":"43","author":[{"given":"Sebastian","family":"Koob","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedics and Trauma Surgery, University Hospital Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Werner","family":"Garbe","sequence":"additional","affiliation":[{"name":"Neonatology, GFO-Kliniken Bonn Betriebsst\u00e4tte St. Marien, Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rahel","family":"Bornemann","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedics and Trauma Surgery, University Hospital Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Milena Maria","family":"Ploeger","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedics and Trauma Surgery, University Hospital Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastian","family":"Scheidt","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedics and Trauma Surgery, University Hospital Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Gathen","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedics and Trauma Surgery, University Hospital Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard","family":"Placzek","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedics and Trauma Surgery, University Hospital Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2020,7,28]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"238607","DOI":"10.5402\/2011\/238607","article-title":"The epidemiology and demographics of hip dysplasia","volume":"2011","author":"R T Loder","year":"2011","journal-title":"ISRN Orthop"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"32","DOI":"10.5312\/wjo.v4.i2.32","article-title":"Developmental dysplasia of the hip in the newborn: A systematic review","volume":"4","author":"V Gulati","year":"2013","journal-title":"World J Orthop"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"215","DOI":"10.5301\/hipint.5000514","article-title":"Hip sonography: background; technique and common mistakes; results; debate and politics; challenges","volume":"27","author":"R Graf","year":"2017","journal-title":"Hip Int"},{"key":"ref4","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1302\/0301-620X.86B4.14586","article-title":"Evolution of late presenting developmental dysplasia of the hip and associated surgical procedures after 14\u00a0years of neonatal ultrasound screening","volume":"86","author":"T Wirth","year":"2004","journal-title":"J Bone Joint Surg Br"},{"key":"ref5","first-page":"417","article-title":"[Congenital hip dysplasia in newborns: Clinical and ultrasound examination, arthrography and closed reduction]","volume":"25","author":"R Placzek","year":"2013","journal-title":"Oper Orthop Traumatol"},{"key":"ref6","first-page":"62","article-title":"Hip sonography in infancy. Procedure and clinical significance","volume":"103","author":"R Graf","year":"1985","journal-title":"Fortschr Med"},{"key":"ref7","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1007\/s11832-013-0498-3","article-title":"Prevalence of developmental dysplasia of the hip in preterm infants with maternal risk factors","volume":"7","author":"C Sezer","year":"2013","journal-title":"Journal of children\u2019s orthopaedics"},{"key":"ref8","doi-asserted-by":"crossref","first-page":"716","DOI":"10.1302\/0301-620X.97B5.34010","article-title":"Is prematurity a risk factor for developmental dysplasia of the hip?: a prospective study","volume":"97-B","author":"M M Orak","year":"2015","journal-title":"The bone & joint journal"}],"container-title":["Ultraschall in der Medizin - European Journal of Ultrasound"],"original-title":[],"language":"de","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/a-1161-8984.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,4,5]],"date-time":"2022-04-05T23:07:32Z","timestamp":1649200052000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/a-1161-8984"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,7,28]]},"references-count":8,"journal-issue":{"issue":"02","published-online":{"date-parts":[[2022,4,5]]},"published-print":{"date-parts":[[2022,4]]}},"URL":"https:\/\/doi.org\/10.1055\/a-1161-8984","archive":["Portico","CLOCKSS"],"relation":{},"ISSN":["0172-4614","1438-8782"],"issn-type":[{"value":"0172-4614","type":"print"},{"value":"1438-8782","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,7,28]]}}}