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The mechanisms of increased metal ion production and pseudotumour formation are discussed. If unexplained neurology, hip\/groin pain or a localised mass around the hip are present with a metal bearing hip then urgent referral to a specialist orthopaedic surgeon is warranted for consideration of exchange arthroplasty.<\/jats:p>","DOI":"10.5301\/hip.2012.9185","type":"journal-article","created":{"date-parts":[[2012,4,2]],"date-time":"2012-04-02T08:24:28Z","timestamp":1333355068000},"page":"129-136","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":13,"title":["Metal-On-Metal Bearings, Inflammatory Pseudotumours and Their Neurological Manifestations"],"prefix":"10.1177","volume":"22","author":[{"given":"Bhupinder S.","family":"Mann","sequence":"first","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, Middlesex - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul M.","family":"Whittingham-Jones","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, Middlesex - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel A.","family":"Shaerf","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, Middlesex - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zuhair S.","family":"Nawaz","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, Middlesex - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Harvie","sequence":"additional","affiliation":[{"name":"Avon Orthopaedic Centre, Southmead Hospital, Bristol - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alister J.","family":"Hart","sequence":"additional","affiliation":[{"name":"Imperial College (Charing Cross Hospital Campus), London - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John A.","family":"Skinner","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, Middlesex - UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2012,2,4]]},"reference":[{"key":"bibr1-HIP.2012.9185","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-200401000-00017"},{"key":"bibr2-HIP.2012.9185","unstructured":"National Joint Registry for England and Wales; 7th Annual Report, 2010. 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