{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T07:44:54Z","timestamp":1777880694905,"version":"3.51.4"},"reference-count":30,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2021,1,1]],"date-time":"2021-01-01T00:00:00Z","timestamp":1609459200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["SAGE Open Medicine"],"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Adverse reactions to metal debris are significant complications after metal-on-metal total hip arthroplasty. Recently, late appearances of adverse reactions to metal debris and subsequent need for reoperations have been reported with small-diameter head metal-on-metal devices. We retrospectively investigated mid-term clinical outcomes of small-head metal-on-metal total hip arthroplasty.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We reviewed 159 hips in 139 patients who had a small-head metal-on-metal total hip arthroplasty (M2a Taper; Biomet, Warsaw, IN) with a minimum 5-year follow-up and documented postoperative complications.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Focal osteolysis in either the femur or acetabulum was observed in 12 hips (7.5%, 44\u2009months after surgery on average), with pseudotumor observed in 8 hips (5%, 120\u2009months after surgery on average). Four hips (2.5%) had dislocations (84\u2009months after surgery on average) and six hips (3.8%, 122\u2009months after surgery on average) underwent reoperation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Small-head metal-on-metal total hip arthroplasty is associated with a high degree of complications at mid-term follow-up period. Considering this, we discourage the use of metal-on-metal total hip arthroplasty regardless of head size.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/20503121211014707","type":"journal-article","created":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T02:56:11Z","timestamp":1621220171000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Small-head metal on metal total hip arthroplasty is associated with a high rate of complication and reoperation at mid-term follow-up"],"prefix":"10.1177","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4247-1228","authenticated-orcid":false,"given":"Nobuhiko","family":"Sumiyoshi","sequence":"first","affiliation":[{"name":"Funabashi Orhopaedic Hospital, Funabashi, Chiba, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuhiro","family":"Oinuma","sequence":"additional","affiliation":[{"name":"Funabashi Orhopaedic Hospital, Funabashi, Chiba, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoko","family":"Miura","sequence":"additional","affiliation":[{"name":"Funabashi Orhopaedic Hospital, Funabashi, Chiba, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,5,16]]},"reference":[{"key":"bibr1-20503121211014707","volume-title":"METASUL\u2014a metal-on-metal bearing","author":"Rieker C","year":"1999"},{"issue":"8","key":"bibr2-20503121211014707","first-page":"5","volume":"19","author":"Rieker CB","year":"2004","journal-title":"J Arthroplasty"},{"key":"bibr3-20503121211014707","volume-title":"National joint replacement registry annual report","author":"Australian Orthopaedic Association","year":"2009"},{"key":"bibr4-20503121211014707","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.J.01727"},{"key":"bibr5-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.92B1.22769"},{"key":"bibr6-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.92B1.22770"},{"key":"bibr7-20503121211014707","doi-asserted-by":"publisher","DOI":"10.3109\/17453674.2013.859419"},{"key":"bibr8-20503121211014707","unstructured":"FDA. Concerns about metal-on-metal hip implants, https:\/\/www.fda.gov\/MedicalDevices\/ProductsandMedicalProcedures\/ImplantsandProsthetics\/MetalonMetalHipImplants\/ucm241604.htm. (2019, accessed 14 August 2020)."},{"key":"bibr9-20503121211014707","unstructured":"Medicines Healthcare products Regulatory Agency (MHRA). All metal-on-metal (MoM) hip replacements: updated advice for follow-up of patients (MDA\/2017\/018), https:\/\/www.gov.uk\/drug-device-alerts\/all-metal-on-metal-mom-hip-replacements-updated-advice-for-follow-up-of-patients (2017, accessed 14 August 2020)."},{"key":"bibr10-20503121211014707","unstructured":"TGA. Metal on Metal Hip Replacements 2017. Australian Government, https:\/\/www.tga.gov.au\/metal-metal-hip-implants-information-patients (2017, accessed 14 August 2020)."},{"key":"bibr11-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-007-0045-y"},{"key":"bibr12-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-016-4920-2"},{"key":"bibr13-20503121211014707","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200006000-00005"},{"key":"bibr14-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2011.02.020"},{"key":"bibr15-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2011.04.015"},{"key":"bibr16-20503121211014707","doi-asserted-by":"publisher","DOI":"10.3928\/01477447-20100625-11"},{"key":"bibr17-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-015-4539-8"},{"key":"bibr18-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1007\/s11999.0000000000000209"},{"key":"bibr19-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1111\/j.1445-2197.2007.04390.x"},{"key":"bibr20-20503121211014707","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200501000-00005"},{"issue":"6","key":"bibr21-20503121211014707","first-page":"1171","volume":"88","author":"Jacobs JJ","year":"2006","journal-title":"J Bone Joint Surg Am"},{"issue":"7","key":"bibr22-20503121211014707","first-page":"1515","volume":"87","author":"Park YS","year":"2005","journal-title":"J Bone Joint Surg Am"},{"key":"bibr23-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2016.05.042"},{"key":"bibr24-20503121211014707","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.I.01644"},{"key":"bibr25-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1016\/S0883-5403(99)90197-3"},{"issue":"244","key":"bibr26-20503121211014707","first-page":"198","volume":"1989","author":"Saito S","journal-title":"Clin Orthop Relat Res"},{"key":"bibr27-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-008-0180-0"},{"key":"bibr28-20503121211014707","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.16.01568"},{"key":"bibr29-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0147872"},{"key":"bibr30-20503121211014707","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-020-04812-6"}],"container-title":["SAGE Open Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/20503121211014707","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/20503121211014707","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/20503121211014707","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:19:18Z","timestamp":1777594758000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/20503121211014707"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1]]},"references-count":30,"alternative-id":["10.1177\/20503121211014707"],"URL":"https:\/\/doi.org\/10.1177\/20503121211014707","relation":{},"ISSN":["2050-3121","2050-3121"],"issn-type":[{"value":"2050-3121","type":"print"},{"value":"2050-3121","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1]]},"article-number":"20503121211014707"}}