{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T17:26:47Z","timestamp":1792517207054,"version":"4.5.0"},"reference-count":44,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T00:00:00Z","timestamp":1654819200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T00:00:00Z","timestamp":1654819200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T00:00:00Z","timestamp":1654819200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To investigate the thickness and intra\u2010substance change of anterior capsule of the hip joint, and compare the difference of the capsular features in patients with different statuses of hip stability.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A retrospective study was performed to review a hip preservation database. Using the lateral center edge angle(LCEA), patients with borderline dysplasia of the hip (BDH) of 20\u00b0\u2009\u2264\u2009LCEA\u2009\u2264\u200925\u00b0, femoracetabular impingement(FAI) with LCEA\u2009&gt;\u200930\u00b0 and dysplasia of the hip (DH) of LCEA\u2009&lt;\u200920\u00b0 were enrolled and stratified into different treatment groups. The patients\u2019 imaging was reviewed by two experienced musculoskeletal radiologists who were blinded to clinical outcomes. Thickness and intra\u2010substance change of the anterior hip capsule was measured on the sagittal oblique sequences of MRI. A surgeon measured the thickness of the anterior hip capsule during arthroscopy. The capsular thickness and intra\u2010substance change were compared among different groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Thirty patients (17 women and 13\u00a0men) enrolled in each group (FAI, BDH, and DH) matched by sex and ages were evaluated. There were no significant differences in terms of age, sex, BMI, Alpha angle, and T\u00f6nnis grade among all three groups. The mean thickness of the anterior capsule in the DH group was 3.2\u2009\u00b1\u20090.5\u00a0mm, which was significantly thinner than that in the BDH and FAI groups (4.5\u2009\u00b1\u20090.8\u00a0mm and 4.7\u2009\u00b1\u20090.6\u00a0mm), and there was no significant difference in capsular thickness between the BDH and FAI groups. The Median of anterior capsule thickness via arthroscopic measuring was 6\u00a0mm and 7\u00a0mm in the BDH and FAI groups respectively, which has no statistical difference. The intra\u2010substance change of the anterior capsule shows a significant difference among the three groups, and a higher incidence of delamination of the capsule was found in DH groups (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Patients with hip dysplasia have a significantly reduced capsular thickness on MRI and delaminated anterior joint capsule, which could be a sequence of instability. The clinical relevance of this study is that capsular thickness and intra\u2010substance changes of the anterior capsule vary which could alter capsular management strategies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Level III of evidence, DIAGNOSTIC STUDIES, No consistently applied reference standard.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-022-07022-2","type":"journal-article","created":{"date-parts":[[2022,6,10]],"date-time":"2022-06-10T02:05:48Z","timestamp":1654826748000},"page":"70-78","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["The anterior hip capsule is thinner in dysplastic hips: a study comparing different young adult hip patients"],"prefix":"10.1002","volume":"31","author":[{"given":"Hui","family":"Bai","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Radiology The Second Hospital of Shandong University Jinan 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February 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"17 May 2022","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"10 June 2022","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"ORA is a Speaker Bureau for Conmed and Smith and Nephew. Other authors declare that they have no competing interests.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This retrospective study was approved by the institutional research ethics committee of the second hospital of Shandong university (No. KYLL-2021\u00a0kJ-P0441).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Retrospective study with anonymous data, and the requirement for informed consent was waived.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}