{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T19:34:51Z","timestamp":1773603291730,"version":"3.50.1"},"reference-count":12,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2013,11,1]],"date-time":"2013-11-01T00:00:00Z","timestamp":1383264000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2013,11,1]],"date-time":"2013-11-01T00:00:00Z","timestamp":1383264000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2013,11]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>The purpose of this study was to evaluate 4 hips with symptomatic protrusio acetabuli treated arthroscopically for symptomatic pincer\u2010type femoroacetabular impingement in 3 patients aged younger than 40 years.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Four hips in 3 patients, all active women, aged 26 to 37 years, with hip pain and radiographic evidence of protrusio acetabuli and a center\u2010edge angle (CEA) of 50\u00b0 or more, were studied and followed up for a minimum of 2.5 years. Each of these patients underwent arthroscopic anterior and lateral acetabuloplasty, partial labrectomy, synovectomy, and chondroplasty. Follow\u2010up included evaluation with the modified Harris Hip Score (mHHS), radiographs, and clinical history and examination.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Patient 1 had bilateral hip surgeries. The right hip was followed up for 63 months, and the CEA improved from 67\u00b0 to 60\u00b0, with an mHHS score improvement by 60.4 points. The CEA for the left hip improved from 63\u00b0 to 53\u00b0 at 61 months' follow\u2010up, and the mHHS improved by 43.9 points. Both hips had a final mHHS of 100 points. Patient 3, followed up for 28 months, had a final mHHS of 100 points, 32 points better than preoperatively, whereas the CEA improved from 51\u00b0 to 44\u00b0. Patient 3, a 26\u2010year\u2010old with preoperative radiographically apparent arthritis, had a final mHHS of 87 points, 35 points better than preoperatively, and the CEA improved from 50\u00b0 to 42\u00b0 at 32 months' follow\u2010up. All 3 patients were happy with their outcomes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>In this small case series, arthroscopic acetabuloplasty showed reduced symptoms and improved function in 3 patients with protrusio aged younger than 40 years at a minimum of 2.5 years' follow\u2010up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level IV, therapeutic case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2013.08.003","type":"journal-article","created":{"date-parts":[[2013,10,24]],"date-time":"2013-10-24T21:59:40Z","timestamp":1382651980000},"page":"1777-1782","source":"Crossref","is-referenced-by-count":26,"title":["Arthroscopic Management of Protrusio Acetabuli"],"prefix":"10.1002","volume":"29","author":[{"given":"Marc R.","family":"Safran","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Stanford University Redwood City California U.S.A."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noah P.","family":"Epstein","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Stanford University Redwood City California U.S.A."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2013,11,1]]},"reference":[{"key":"e_1_2_2_2_2","first-page":"105","article-title":"Protrusio acetabuli","volume":"62","author":"Dunlop C.C.","year":"2005","journal-title":"Bull Hosp Jt Dis"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198062070-00003"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.5435\/00124635-200103000-00002"},{"key":"e_1_2_2_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-66212-6_4"},{"key":"e_1_2_2_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-009-0853-3"},{"key":"e_1_2_2_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.blo.0000195057.27653.93"},{"issue":"58","key":"e_1_2_2_8_2","first-page":"1","article-title":"Studies on dysplastic acetabula and congenital subluxation of the hip joint","volume":"83","author":"Wiberg G.","year":"1939","journal-title":"Acta Chir Scand"},{"key":"e_1_2_2_9_2","first-page":"869","article-title":"Treatment of malum coxae senilis, old slipped upper capital femoral epiphysis, intrapelvic protrusion of the acetabulum, and coxae plana by means of acetabuloplasty","volume":"18","author":"Smith\u2010Petersen M.N.","year":"1936","journal-title":"J\u00a0Bone Joint Surg"},{"key":"e_1_2_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2012.02.028"},{"key":"e_1_2_2_11_2","doi-asserted-by":"publisher","DOI":"10.1148\/128.1.1"},{"key":"e_1_2_2_12_2","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.06.0921"},{"key":"e_1_2_2_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-013-2914-x"}],"container-title":["Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0749806313008840?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0749806313008840?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1016\/j.arthro.2013.08.003","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/full-xml\/10.1016\/j.arthro.2013.08.003","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1016\/j.arthro.2013.08.003","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T08:51:28Z","timestamp":1773564688000},"score":1,"resource":{"primary":{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/10.1016\/j.arthro.2013.08.003"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,11]]},"references-count":12,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2013,11]]}},"alternative-id":["10.1016\/j.arthro.2013.08.003"],"URL":"https:\/\/doi.org\/10.1016\/j.arthro.2013.08.003","archive":["Portico"],"relation":{},"ISSN":["0749-8063","1526-3231"],"issn-type":[{"value":"0749-8063","type":"print"},{"value":"1526-3231","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,11]]}}}