{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T20:49:11Z","timestamp":1790110151871,"version":"4.0.1"},"reference-count":21,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"7","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Bone and Joint Surgery"],"published-print":{"date-parts":[[2017,4,5]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Implantation of the acetabular cup insert in the \u201ctrue\u201d location of the acetabulum is a fundamental principle of total hip arthroplasty for the treatment of secondary osteoarthritis due to developmental dysplasia of the hip (DDH). As knowledge of the morphology of the acetabulum is required for accurate placement, we investigated the relationship between acetabular width and the Crowe classification of subluxation percentage of the hip. We also analyzed factors associated with the acetabular width ratio (AWR), defined as the acetabular width of the dysplastic hip divided by that of the unaffected, contralateral hip.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We completed a retrospective review of the preoperative standard anteroposterior radiographs and computed tomography (CT) scans of 207 female patients who underwent primary total hip arthroplasty for unilateral DDH. The \u201ctrue\u201d acetabular plane was defined on each CT reconstruction as a plane perpendicular to the anterior pelvic plane, parallel to the teardrop line, and passing through the center of the femoral head on the unaffected, contralateral side. The acetabular width was measured for both the affected hip and the contralateral, reference hip on the true acetabular plane, with the acetabular width defined as the distance between the edges of the anterior and posterior walls of the acetabulum. All hips were classified according to the Crowe groupings on the basis of the subluxation percentage of the dysplastic hip; the subluxation percentage increased from groups I to IV, with group IVb showing joint dislocation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The acetabular width decreased from Crowe groups I to IVb, with a negative correlation found between the AWR and the subluxation percentage (Spearman correlation coefficient, \u03c1 = \u22120.404; p &lt; 0.001). Multivariate regression analysis identified subluxation percentage and femoral neck-shaft angle as independent factors associated with the AWR.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Characterization of factors associated with the AWR, namely subluxation percentage and femoral neck-shaft angle, will guide surgeons in correctly implanting the acetabular cup insert during total hip arthroplasty in patients with DDH.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.16.00444","type":"journal-article","created":{"date-parts":[[2017,4,5]],"date-time":"2017-04-05T12:38:30Z","timestamp":1491395910000},"page":"e31","source":"Crossref","is-referenced-by-count":15,"title":["The Relationship Between Subluxation Percentage of the Femoroacetabular Joint and Acetabular Width in Asian Women with Developmental Dysplasia of the Hip"],"prefix":"10.2106","volume":"99","author":[{"given":"Yaichiro","family":"Okuzu","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koji","family":"Goto","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomotoshi","family":"Kawata","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazutaka","family":"So","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yutaka","family":"Kuroda","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuichi","family":"Matsuda","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"issue":"4","key":"bib1-20230810","doi-asserted-by":"crossref","first-page":"587","DOI":"10.2106\/00004623-199173040-00016","article-title":"Proximal placement of the acetabular component in total hip arthroplasty. A long-term follow-up study","volume":"73","author":"Russotti","year":"1991","journal-title":"J Bone Joint Surg Am."},{"issue":"2","key":"bib2-20230810","doi-asserted-by":"crossref","first-page":"630","DOI":"10.1007\/s11999-013-3187-0","article-title":"Durable fixation achieved with medialized, high hip center cementless THAs for Crowe II and III dysplasia","volume":"472","author":"Nawabi","year":"2014","journal-title":"Clin Orthop Relat Res."},{"issue":"3","key":"bib3-20230810","doi-asserted-by":"crossref","first-page":"e313","DOI":"10.3928\/01477447-20120222-28","article-title":"15-year comparison of cementless total hip arthroplasty with anatomical or high cup placement for Crowe I to III hip dysplasia","volume":"35","author":"Murayama","year":"2012","journal-title":"Orthopedics."},{"issue":"7","key":"bib4-20230810","doi-asserted-by":"crossref","first-page":"1143","DOI":"10.1016\/j.arth.2009.12.016","article-title":"Effect of cementless acetabular component orientation, position, and containment in total hip arthroplasty for congenital hip disease","volume":"25","author":"Georgiades","year":"2010","journal-title":"J Arthroplasty."},{"key":"bib5-20230810","doi-asserted-by":"crossref","first-page":"164","DOI":"10.1097\/00003086-198802000-00020","article-title":"Charnley arthroplasty in osteoarthritis secondary to congenital dislocation or subluxation of the hip","volume":"227","author":"Linde","year":"1988","journal-title":"Clin Orthop Relat Res."},{"issue":"5","key":"bib6-20230810","doi-asserted-by":"crossref","first-page":"582","DOI":"10.1016\/S0883-5403(96)80113-6","article-title":"Influence of the Crowe rating on the outcome of total hip arthroplasty in congenital hip dysplasia","volume":"11","author":"Cameron","year":"1996","journal-title":"J Arthroplasty."},{"issue":"2","key":"bib7-20230810","doi-asserted-by":"crossref","first-page":"242","DOI":"10.2106\/00004623-200402000-00005","article-title":"Total hip arthroplasty for congenital hip disease","volume":"86","author":"Hartofilakidis","year":"2004","journal-title":"J Bone Joint Surg Am."},{"issue":"1","key":"bib8-20230810","doi-asserted-by":"crossref","first-page":"15","DOI":"10.2106\/00004623-197961010-00004","article-title":"Total hip replacement in congenital dislocation and dysplasia of the hip","volume":"61","author":"Crowe","year":"1979","journal-title":"J Bone Joint Surg Am."},{"issue":"2","key":"bib9-20230810","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1302\/0301-620X.43B2.268","article-title":"Acetabular dysplasia: the acetabular angle","volume":"43","author":"Sharp","year":"1961","journal-title":"J Bone Joint Surg Br."},{"issue":"9","key":"bib10-20230810","doi-asserted-by":"crossref","first-page":"1192","DOI":"10.1302\/0301-620X.87B9.15928","article-title":"Three-dimensional anatomy of the hip in osteoarthritis after developmental dysplasia","volume":"87","author":"Argenson","year":"2005","journal-title":"J Bone Joint Surg Br."},{"issue":"1","key":"bib11-20230810","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1302\/0301-620X.57B1.46","article-title":"Acetabular development in congenital dislocation of the hip. With special reference to the indications for acetabuloplasty and pelvic or femoral realignment osteotomy","volume":"57","author":"Harris","year":"1975","journal-title":"J Bone Joint Surg Br."},{"issue":"4","key":"bib12-20230810","doi-asserted-by":"crossref","first-page":"455","DOI":"10.1007\/s00256-015-2314-2","article-title":"The neck shaft angle: CT reference values of 800 adult hips","volume":"45","author":"Boese","year":"2016","journal-title":"Skeletal Radiol."},{"issue":"1","key":"bib13-20230810","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1007\/s00256-015-2236-z","article-title":"The femoral neck-shaft angle on plain radiographs: a systematic review","volume":"45","author":"Boese","year":"2016","journal-title":"Skeletal Radiol."},{"issue":"1","key":"bib14-20230810","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1177\/0363546515604667","article-title":"Clinical and radiographic predictors for worsened clinical outcomes after hip arthroscopic labral preservation and capsular closure in developmental dysplasia of the hip","volume":"44","author":"Uchida","year":"2016","journal-title":"Am J Sports Med."},{"issue":"12","key":"bib15-20230810","doi-asserted-by":"crossref","first-page":"1703","DOI":"10.1302\/0301-620X.92B12.23446","article-title":"Acetabular and proximal femoral alignment in patients with osteoarthritis of the dysplastic hip and its influence on the progression of disease","volume":"92","author":"Aoki","year":"2010","journal-title":"J Bone Joint Surg Br."},{"issue":"4","key":"bib16-20230810","first-page":"281","article-title":"[Radiologic evaluation of the rotation center of the hip]","volume":"79","author":"Pierchon","year":"1993","journal-title":"Rev Chir Orthop Reparatrice Appar Mot."},{"issue":"6","key":"bib17-20230810","doi-asserted-by":"crossref","first-page":"762","DOI":"10.1302\/0301-620X.87B6.14745","article-title":"Reducing the risk of dislocation after total hip arthroplasty: the effect of orientation of the acetabular component","volume":"87","author":"Biedermann","year":"2005","journal-title":"J Bone Joint Surg Br."},{"issue":"1","key":"bib18-20230810","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.arth.2007.06.008","article-title":"The influence of acetabular component position on wear in total hip arthroplasty","volume":"23","author":"Wan","year":"2008","journal-title":"J Arthroplasty."},{"key":"bib19-20230810","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1097\/00003086-200107000-00020","article-title":"Effect of acetabular cup position and orientation in cemented total hip arthroplasty","volume":"388","author":"Hirakawa","year":"2001","journal-title":"Clin Orthop Relat Res."},{"issue":"4","key":"bib20-20230810","doi-asserted-by":"crossref","first-page":"1432","DOI":"10.1007\/s11999-015-4155-7","article-title":"Are there sex-dependent differences in acetabular dysplasia characteristics?","volume":"473","author":"Duncan","year":"2015","journal-title":"Clin Orthop Relat Res."},{"issue":"5","key":"bib21-20230810","doi-asserted-by":"crossref","first-page":"1712","DOI":"10.1007\/s11999-014-4103-y","article-title":"How are dysplastic hips different? A three-dimensional CT study","volume":"473","author":"van Bosse","year":"2015","journal-title":"Clin Orthop Relat Res."}],"container-title":["Journal of Bone and Joint Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/00004623-201704050-00010","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:38:43Z","timestamp":1787751523000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/00004623-201704050-00010"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,4,5]]},"references-count":21,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2017]]}},"URL":"https:\/\/doi.org\/10.2106\/jbjs.16.00444","relation":{},"ISSN":["0021-9355","1535-1386"],"issn-type":[{"value":"0021-9355","type":"print"},{"value":"1535-1386","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,4,5]]}}}