{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T06:30:46Z","timestamp":1773037846865,"version":"3.50.1"},"reference-count":16,"publisher":"Wiley","license":[{"start":{"date-parts":[[2015,1,1]],"date-time":"2015-01-01T00:00:00Z","timestamp":1420070400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["R01 AR47904"],"award-info":[{"award-number":["R01 AR47904"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2015]]},"abstract":"<jats:p>Metal transfer has been observed on retrieved THA femoral heads for both CoCr and ceramic bearing materials.<jats:italic>In vitro<\/jats:italic>wear testing has shown increased wear to polyethylene acetabular liners with the presence of metal transfer. This study sought to investigate the extent of metal transfer on the bearing surface of CoCr and ceramic femoral heads and identify prevalent morphologies. Three bearing couple cohorts: M-PE (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>50<\/mml:mn><\/mml:math>), C-PE (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>35<\/mml:mn><\/mml:math>), and C-C (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M3\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>15<\/mml:mn><\/mml:math>), were derived from two previously matched collections (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M4\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>50<\/mml:mn><\/mml:math>\/group) of CoCr and ceramic femoral heads. From the three cohorts, 75% of the femoral heads showed visual evidence of metal transfer. These femoral heads were analyzed using direct measurement, digital photogrammetry, and white light interferometry. Surface area coverage and curved median surface area were similar among the three cohorts. The most prevalent metal transfer patterns observed were random stripes (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M5\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>21<\/mml:mn><mml:mo>\/<\/mml:mo><mml:mn>75<\/mml:mn><\/mml:math>), longitudinal stripes (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M6\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>17<\/mml:mn><mml:mo>\/<\/mml:mo><mml:mn>75<\/mml:mn><\/mml:math>), and random patches (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M7\"><mml:mi>n<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>13<\/mml:mn><mml:mo>\/<\/mml:mo><mml:mn>75<\/mml:mn><\/mml:math>). Metal transfer arc length was shorter in the M-PE cohort. Understanding the morphology of metal transfer may be useful for more realistic recreation of metal transfer in<jats:italic>in vitro<\/jats:italic>pin-on-disk and joint simulators studies.<\/jats:p>","DOI":"10.1155\/2015\/283038","type":"journal-article","created":{"date-parts":[[2015,10,25]],"date-time":"2015-10-25T17:01:46Z","timestamp":1445792506000},"page":"1-10","source":"Crossref","is-referenced-by-count":10,"title":["Does Metal Transfer Differ on Retrieved Ceramic and CoCr Femoral Heads?"],"prefix":"10.1155","volume":"2015","author":[{"given":"Eliza K.","family":"Fredette","sequence":"first","affiliation":[{"name":"Implant Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel W.","family":"MacDonald","sequence":"additional","affiliation":[{"name":"Implant Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard J.","family":"Underwood","sequence":"additional","affiliation":[{"name":"Implant Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, USA"},{"name":"Exponent, Inc., Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonia F.","family":"Chen","sequence":"additional","affiliation":[{"name":"Rothman Institute at Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael A.","family":"Mont","sequence":"additional","affiliation":[{"name":"Center for Joint Preservation and Replacement, The Rubin Institute of Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD 21215, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gwo-Chin","family":"Lee","sequence":"additional","affiliation":[{"name":"The University of Pennsylvania, Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gregg R.","family":"Klein","sequence":"additional","affiliation":[{"name":"Hartzband Center for Hip and Knee Replacement, Paramus, NJ 07652, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Clare M.","family":"Rimnac","sequence":"additional","affiliation":[{"name":"Center for the Evaluation of Implant Performance, Departments of Orthopaedics and Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steven M.","family":"Kurtz","sequence":"additional","affiliation":[{"name":"Implant Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, USA"},{"name":"Exponent, Inc., Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.2106\/jbjs.d.01790"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2006.02.155"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1002\/jbm.b.30937"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-009-0911-x"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-006-0109-6"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1155\/2013\/624267"},{"key":"7","first-page":"84","volume":"34","year":"2014","journal-title":"The Iowa Orthopaedic 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