{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T16:00:03Z","timestamp":1789574403168,"version":"build-2803163510"},"reference-count":30,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2005,2,18]],"date-time":"2005-02-18T00:00:00Z","timestamp":1108684800000},"content-version":"vor","delay-in-days":5346,"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":[[1990,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The relationship between excessive articular contact pressure, aseptic necrosis, and the long\u2010term outcome with unilateral congenital dislocation of the hip (CDH) was studied in a series of 84 patients treated by closed reduction and followed for an average of 29.2 years. Contact stress was estimated from archived radiographs taken at the time of maturity and at several follow\u2010up visits. At a recent review, each patient was rated both clinically for pain and function and radiographically for deformity, degeneration, and aseptic necrosis. For each of 431 films, articular contact stress (force\/area) was estimated mathematically, based upon a frontal plane equilibrium (force) analysis and a landmark\u2010based inference of three\u2010dimensional head surface (area). Good correlation with final deformity (Spearman \u03c1 = 0.78) was obtained when the hips were ranked in terms of a new cumulative overpressure index P\u0302, defined as a time\u2010pressure product involving years of pressure exposure beyond a 2 MPa pressure damage level. An unsatisfactory outcome occurred in 90.4% of the hips experiencing P\u0302 &gt; 10 MPa\u2010years (most of which had aseptic necrosis involvement), whereas the outcome was satisfactory in 80.9% of hips with P\u0302 &lt; 10 MPa\u2010years.<\/jats:p>","DOI":"10.1002\/jor.1100080406","type":"journal-article","created":{"date-parts":[[2005,2,24]],"date-time":"2005-02-24T12:41:30Z","timestamp":1109248890000},"page":"504-513","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":192,"title":["The effects of contact pressure elevations and aseptic necrosis on the long\u2010term outcome of congenital hip dislocation"],"prefix":"10.1002","volume":"8","author":[{"given":"Nancy A.","family":"Hadley","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas D.","family":"Brown","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stuart L.","family":"Weinstein","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,2,18]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1302\/0301-620X.66B4.6746678","article-title":"Derotation osteotomy in the management of congenital dislocation of the hip","volume":"66","author":"Blockey NJ","year":"1984","journal-title":"J Bone Joint Surg [Br]"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-96691-0"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198163010-00011"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9290(81)90021-X"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9290(83)90071-4"},{"key":"e_1_2_1_7_2","first-page":"301","article-title":"Load transmission through the proximal femur of the growing child: a finite element analysis","volume":"44","author":"Brown TD","year":"1980","journal-title":"Growth"},{"key":"e_1_2_1_8_2","volume-title":"Proceedings of the 6th Open Scientific Meeting of the Hip Society","author":"Bucholz RW","year":"1978"},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198062020-00012"},{"key":"e_1_2_1_10_2","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1097\/00003086-198305000-00013","article-title":"Acetabular dysplasia in the adult","volume":"175","author":"Cooperman DR","year":"1983","journal-title":"Clin Orthop"},{"key":"e_1_2_1_11_2","volume-title":"Orthopaedic Biomechanics","author":"Frankel VH","year":"1970"},{"key":"e_1_2_1_12_2","doi-asserted-by":"crossref","first-page":"373","DOI":"10.2106\/00004623-197254020-00015","article-title":"Avascular necrosis of the capital femoral epiphysis as a complication of closed reduction of congenital dislocation of the hip. A critical review of twenty years' experience at Gilette Children's Hospital","volume":"54","author":"Gage TR","year":"1972","journal-title":"J Bone Joint Surg [Am]"},{"key":"e_1_2_1_13_2","first-page":"288","article-title":"Congenital dislocation of the hip: a review of adults treated in childhood","volume":"10","author":"Gibson DA","year":"1967","journal-title":"Can J Surg"},{"key":"e_1_2_1_14_2","first-page":"1","article-title":"Contact pressures in the human hip joint measured in\u2010vivo","volume":"83","author":"Harris WH","year":"1986","journal-title":"Proc Natl Acad Sci USA"},{"key":"e_1_2_1_15_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198062060-00002"},{"key":"e_1_2_1_16_2","volume-title":"Congenital Dysplasia and Dislocation of the Hip","author":"Legal H","year":"1987"},{"key":"e_1_2_1_17_2","doi-asserted-by":"crossref","first-page":"112","DOI":"10.2106\/00004623-197961010-00020","article-title":"Acetabular development after reduction in congenital dislocation of the hip","volume":"61","author":"Linstrom TR","year":"1979","journal-title":"J Bone Joint Surg [Am]"},{"key":"e_1_2_1_18_2","unstructured":"MalvitzTA WeinsteinSL PonsetiIV:Congenital hip dysplasia: review of 152 closed reductions with 31\u2010year follow\u2010up. 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