{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T18:46:30Z","timestamp":1793040390232,"version":"4.5.0"},"reference-count":27,"publisher":"MJS Publishing, Medical Journals Sweden AB","license":[{"start":{"date-parts":[[2025,6,26]],"date-time":"2025-06-26T00:00:00Z","timestamp":1750896000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ActaO"],"abstract":"<jats:p>Background and purpose:\u00a0South Korea has implemented the National Health Screening Program for Infants and Children (NHSPIC), which includes clinical hip screening with selective hip ultrasonography beginning at 4 months of age. We aimed to investigate the trends in developmental dysplasia of the hip (DDH), associated risk factors, and growth and motor developmental outcomes up to preschool age.Methods:\u00a0We included a retrospective, population-based birth cohort of children born between 2008 and 2015. Patients diagnosed with DDH were stratified by age at detection (early diagnosed [&lt;1 year] vs late diagnosed [\u22651 year]) and treatment modalities (major surgery, minor surgery, or nonoperative). Growth and motor developmental outcomes were assessed using NHSPIC data collected up to 6 years of age.Results:\u00a0Among 2,518,805 children, 4,854 (0.19%) were diagnosed with DDH. The incidence of DDH increased from 1.29 to 2.37 per 1,000 individuals, with the incidence of early diagnosed DDH increased from 0.70 to 1.94 per 1,000. However, the rate of surgical treatment remained unchanged (0.19\u20130.28 per 1,000). Children who underwent surgical treatment for DDH had a significantly higher incidences of short stature, and delayed gross motor development.Conclusion:\u00a0After the introduction of the NHSPIC hip screening program, incidences of overall and early diagnosed DDH increased, whereas the surgical treatment rate showed no significant change. Surgical treatment for DDH was significantly associated with both short stature and delayed gross motor development.<\/jats:p>","DOI":"10.2340\/17453674.2025.43980","type":"journal-article","created":{"date-parts":[[2025,6,26]],"date-time":"2025-06-26T07:21:18Z","timestamp":1750922478000},"page":"477-484","source":"Crossref","is-referenced-by-count":2,"title":["Incidence trends and perinatal risk factors of developmental dysplasia of the hip: a nationwide population-based study from South Korea"],"prefix":"10.2340","volume":"96","author":[{"given":"Kunhyung","family":"Bae","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jong Ho","family":"CHA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiyoung Agatha","family":"KIM","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soorack","family":"Ryu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0465-7902","authenticated-orcid":false,"given":"Jae","family":"Yoon Na\u00a0","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young-Jin","family":"Choi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1183","published-online":{"date-parts":[[2025,6,26]]},"reference":[{"key":"116489","doi-asserted-by":"crossref","unstructured":"Dezateux C, Rosendahl K. Developmental dysplasia of the hip. Lancet 2007; 369: 1541-52. doi: 10.1016\/S0140-6736(07)60710-7.","DOI":"10.1016\/S0140-6736(07)60710-7"},{"key":"116490","doi-asserted-by":"crossref","unstructured":"Broadhurst C, Rhodes A, Harper P, Perry D, Clarke N, Aarvold A. What is the incidence of late detection of developmental dysplasia of the hip in England?: a 26-year national study of children diagnosed after the age of one. Bone Joint J 2019; 101: 281-7. doi: 10.1302\/0301-620X.101B3.BJJ-2018-1331.R1.","DOI":"10.1302\/0301-620X.101B3.BJJ-2018-1331.R1"},{"key":"116491","doi-asserted-by":"crossref","unstructured":"Gahleitner M, Pisecky L, Gotterbarm T, H\u00f6gler W, Luger M, Klotz M C. Long-term results of developmental hip dysplasia under therapy with Pavlik harness. J Pediatr Orthop 2024; 44: 135-40. doi: 10.1097\/BPO.0000000000002575.","DOI":"10.1097\/BPO.0000000000002575"},{"key":"116492","doi-asserted-by":"crossref","unstructured":"Chang CH, Chiang Y-T, Chen L, Kuo K N. The influence of health policy on early diagnosis and surgical incidence of developmental dysplasia of the hip. PLoS One 2018; 13: e0200995. doi: 10.1371\/journal.pone.0200995.","DOI":"10.1371\/journal.pone.0200995"},{"key":"116493","doi-asserted-by":"crossref","unstructured":"Cooke S, Kiely N. The role of community screening for developmental dysplasia of the hip at the 8-month baby check. Child Care Health Dev 2011; 37: 1-4. doi: 10.1111\/j.1365-2214.2010.01100.x.","DOI":"10.1111\/j.1365-2214.2010.01100.x"},{"key":"116494","doi-asserted-by":"crossref","unstructured":"Quader N, Schaeffer E K, Hodgson A J, Abugharbieh R, Mulpuri K. A systematic review and meta-analysis on the reproducibility of ultrasound-based metrics for assessing developmental dysplasia of the hip. J Pediatr Orthop 2018; 38: e305-e311. doi: 10.1097\/BPO.0000000000001179.","DOI":"10.1097\/BPO.0000000000001179"},{"key":"116495","doi-asserted-by":"crossref","unstructured":"Woodacre T, Ball T, Cox P. Epidemiology of developmental dysplasia of the hip within the UK: refining the risk factors. J Child Orthop 2016; 10: 633-42. doi: 10.1007\/s11832-016-0798-5.","DOI":"10.1007\/s11832-016-0798-5"},{"key":"116496","doi-asserted-by":"crossref","unstructured":"Wenger D, D\u00fcppe H, Nilsson J-\u00c5, Tiderius C J. Incidence of late-diagnosed hip dislocation after universal clinical screening in Sweden. JAMA Netw Open 2019; 2: e1914779-e1914779. doi: 10.1001\/jamanetworkopen.2019.14779.","DOI":"10.1001\/jamanetworkopen.2019.14779"},{"key":"116497","doi-asserted-by":"crossref","unstructured":"Barr L, Rehm A. Should all twins and multiple births undergo ultrasound examination for developmental dysplasia of the hip?: a retrospective study of 990 multiple births. Bone Joint J 2013; 95: 132-4. doi: 10.1302\/0301-620X.95B1.29927.","DOI":"10.1302\/0301-620X.95B1.29927"},{"key":"116498","doi-asserted-by":"crossref","unstructured":"Kural B, Devecio\u011flu Karap\u0131nar E, Y\u0131lmazba\u015f P, Eren T, G\u00f6k\u00e7ay G. Risk factor assessment and a ten-year experience of DDH screening in a well-child population. Biomed Res Int 2019; 2019. doi: 10.1155\/2019\/7213681.","DOI":"10.1155\/2019\/7213681"},{"key":"116499","doi-asserted-by":"crossref","unstructured":"Cha JH, Cho Y, Moon J-H, Lee J, Na J Y, Kim Y J. Feeding practice during infancy is associated with attention-deficit\/hyperactivity disorder and autism spectrum disorder: a population-based study in South Korea. Eur J Pediatr 2023; 182: 3559-68. doi: 10.1007\/s00431-023-05022-z.","DOI":"10.1007\/s00431-023-05022-z"},{"key":"116500","doi-asserted-by":"crossref","unstructured":"Von Elm E, Altman D G, Egger M, Pocock S J, G\u00f8tzsche P C, Vandenbroucke J P. The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. Lancet 2007; 370: 1453-7. doi: 10.1016\/S0140-6736(07)61602-X.","DOI":"10.1016\/S0140-6736(07)61602-X"},{"key":"116501","doi-asserted-by":"crossref","unstructured":"Kim J H, Yun S, Hwang S-s, Shim J O, Chae H W, Lee Y J, et al. The 2017 Korean National Growth Charts for children and adolescents: development, improvement, and prospects. Korean J Pediatr 2018; 61: 135. doi: 10.3345\/kjp.2018.61.5.135.","DOI":"10.3345\/kjp.2018.61.5.135"},{"key":"116502","doi-asserted-by":"crossref","unstructured":"Cha J H, Ryu S, Park M, Lim B C, Kim Y J, Moon J-H. Developmental screening of neurodevelopmental disorders before age 6: a nationwide health screening program. Pediatr Res 2024; 1-9. doi: 10.1038\/s41390-024-03516-6.","DOI":"10.1038\/s41390-025-04064-3"},{"key":"116503","doi-asserted-by":"crossref","unstructured":"Den H, Ito J, Kokaze A. 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