{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T08:54:35Z","timestamp":1760864075160,"version":"3.37.3"},"reference-count":27,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2020,2,20]],"date-time":"2020-02-20T00:00:00Z","timestamp":1582156800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2020,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Radiostereometric analysis (RSA) is the most accurate method of measuring component migration using radiographs but is restricted to use in prospective studies. Ein\u2010Bild\u2010Roentgen\u2010analyze (EBRA)\u2010Cup can be used retrospectively, but its accuracy to measure component migration following revision is unknown. This study aimed to determine the accuracy of EBRA\u2010Cup measurements of uncemented acetabular component migration after revision total hip replacement (THR). The secondary aim was to compare the number of cases identified using EBRA\u2010Cup and RSA as having proximally migrated above and below 1\u2009mm at 2 years postoperatively. EBRA\u2010Cup measurements were performed on plain antero\u2010posterior pelvic radiographs taken at the same time as RSA radiographs in a prospective cohort of 53 hips undergoing acetabular revision. At 2 years, the mean difference between the RSA and EBRA\u2010Cup measurements for 17 components used to treat pelvic discontinuity was 0.90\u2009mm, significantly greater than the mean difference of 0.28\u2009mm for 36 components without discontinuity (<jats:italic>P<\/jats:italic>\u2009=\u2009.0001). The mean difference between the RSA and EBRA\u2010Cup measurements at 2 years for hips that were reconstructed with an acetabular component alone, 0.28\u2009mm, was significantly lower than hips that were reconstructed with an acetabular component in combination with an augment and\/or cage, 0.74\u2009mm (<jats:italic>P<\/jats:italic>\u2009=\u2009.0005). In conclusion, EBRA\u2010Cup can accurately measure migration of uncemented acetabular components used at revision THR. The presence of pelvic discontinuity, and addition of augments and cages, significantly influenced the accuracy of EBRA\u2010Cup measurements. EBRA\u2010Cup and RSA had good agreement on classification of components that migrated proximally above or below 1\u2009mm at 2 years, with 100% sensitivity, and 87% specificity.<\/jats:p>","DOI":"10.1002\/jor.24623","type":"journal-article","created":{"date-parts":[[2020,2,10]],"date-time":"2020-02-10T11:09:33Z","timestamp":1581332973000},"page":"1497-1505","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Accuracy of EBRA\u2010cup measurements after reconstruction of severe acetabular defects at revision THR"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7037-8787","authenticated-orcid":false,"given":"John M.","family":"Abrahams","sequence":"first","affiliation":[{"name":"Centre for Orthopaedic and Trauma Research Faculty of Health and Medical Sciences, The University of Adelaide  Adelaide South Australia"},{"name":"Department of Orthopaedics and Trauma Royal Adelaide Hospital  Adelaide South Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2892-5238","authenticated-orcid":false,"given":"Stuart A.","family":"Callary","sequence":"additional","affiliation":[{"name":"Centre for Orthopaedic and Trauma Research Faculty of Health and Medical Sciences, The University of Adelaide  Adelaide South Australia"},{"name":"Department of Orthopaedics and Trauma Royal Adelaide Hospital  Adelaide South Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sung W.","family":"Jang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Pohang Se Myeong Christianity Hospital  Pohang\u2010si Gyeongsangbuk\u2010do Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph","family":"Hewitt","sequence":"additional","affiliation":[{"name":"Centre for Orthopaedic and Trauma Research Faculty of Health and Medical Sciences, The University of Adelaide  Adelaide South Australia"},{"name":"Department of Orthopaedics and Trauma Royal Adelaide Hospital  Adelaide South Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Donald W.","family":"Howie","sequence":"additional","affiliation":[{"name":"Centre for Orthopaedic and Trauma Research Faculty of Health and Medical Sciences, The University of Adelaide  Adelaide South Australia"},{"name":"Department of Orthopaedics and Trauma Royal Adelaide Hospital  Adelaide South Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lucian B.","family":"Solomon","sequence":"additional","affiliation":[{"name":"Centre for Orthopaedic and Trauma Research Faculty of Health and Medical Sciences, The University of Adelaide  Adelaide South Australia"},{"name":"Department of Orthopaedics and Trauma Royal Adelaide Hospital  Adelaide South Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,2,20]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.78B3.0780422"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.K.00305"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.5301\/hipint.5000246"},{"key":"e_1_2_7_5_1","unstructured":"Australian Orthopaedic Association National Joint Replacement Registry.Supplementary report: revision hip and knee arthroplasty.2018."},{"key":"e_1_2_7_6_1","unstructured":"Svenska H\u00f6ftprotesregistret.Annual report: swedish hip arthroplasty register.2017.https:\/\/registercentrum.blob.core.windows.net\/shpr\/r\/Eng_Arsrapport_2017_Hoftprotes_final\u2010Syx2fJPhMN.pdf"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.RVW.15.00119"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0883-5403(07)80027-1"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.3109\/03009739209179283"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0883-5403(92)90004-A"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.71B4.2768311"},{"issue":"344","key":"e_1_2_7_12_1","first-page":"94","article-title":"Radiostereometry of hip prostheses. 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