{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,22]],"date-time":"2026-02-22T07:38:45Z","timestamp":1771745925931,"version":"3.50.1"},"reference-count":58,"publisher":"ASME International","issue":"2","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2007,4,1]]},"abstract":"<jats:p>Total replacement of the glenohumeral joint provides an effective means for treating a variety of pathologies of the shoulder. However, several studies indicate that the procedure has not yet been entirely optimized. Loosening of the glenoid component remains the most likely cause of implant failure, and generally this is believed to stem from either mechanical failure of the fixation in response to high tensile stresses, or through osteolysis of the surrounding bone stock in response to particulate wear debris. Many computational studies have considered the potential for the former, although only few have attempted to tackle the latter. Using finite-element analysis an investigation, taking into account contact pressures as well as glenohumeral kinematics, has thus been conducted, to assess the potential for polyethylene wear within the artificial shoulder. The relationships between three different aspects of glenohumeral design and the potential for wear have been considered, these being conformity, polyethylene thickness, and fixation type. The results of the current study indicate that the use of conforming designs are likely to produce slightly elevated amounts of wear debris particles when compared with less conforming joints, but that the latter would be more likely to cause material failure of the polyethylene. The volume of wear debris predicted was highly influenced by the rate of loading, however qualitatively it was found that wear predictions were not influenced by the use of different polyethylene thicknesses nor fixation type while the depth of wearing was. With the thinnest polyethylene designs (2mm) the maximum depth of the wear scar was seen to be upwards of 20% higher with a metal-backed fixation as opposed to a cemented design. In all-polyethylene designs peak polymethyl methacrylate tensile stresses were seen to reduce with increasing polyethylene thickness. Irrespective of the rate of loading of the shoulder joint, the current study indicates that it is possible to optimize glenoid component design against abrasive wear through the use of high conformity designs, possessing a polyethylene thickness of at least 6mm.<\/jats:p>","DOI":"10.1115\/1.2486060","type":"journal-article","created":{"date-parts":[[2007,4,3]],"date-time":"2007-04-03T22:35:07Z","timestamp":1175639707000},"page":"223-230","update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":37,"title":["Wear in the Prosthetic Shoulder: Association With Design Parameters"],"prefix":"10.1115","volume":"129","author":[{"given":"Andrew R.","family":"Hopkins","sequence":"first","affiliation":[{"name":"Biomechanics Section, Mechanical Engineering Department, Imperial College London, London, SW7 2AZ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ulrich N.","family":"Hansen","sequence":"additional","affiliation":[{"name":"Biomechanics Section, Department of Mechanical Engineering, Imperial College London, Room 637, Mechanical Engineering Building, South Kensington Campus, London SW7 2AZ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew A.","family":"Amis","sequence":"additional","affiliation":[{"name":"Biomechanics Section, Mechanical Engineering Department, Imperial College London, London SW7 2AZ, UK; Musculoskeletal Surgery Department, Imperial College London, London SW7 2AZ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lucy","family":"Knight","sequence":"additional","affiliation":[{"name":"Bioengineering Science Research Group, School of Engineering Sciences, University of Southampton, Highfield Campus, Southampton SO17 1BJ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark","family":"Taylor","sequence":"additional","affiliation":[{"name":"Bioengineering Science Research Group, School of Engineering Sciences, University of Southampton, Highfield Campus, Southampton SO17 1BJ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ofer","family":"Levy","sequence":"additional","affiliation":[{"name":"The Reading Shoulder Surgery Unit, Royal Berkshire Hospital, Reading RG1 602, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephen A.","family":"Copeland","sequence":"additional","affiliation":[{"name":"The Reading Shoulder Surgery Unit, Royal Berkshire Hospital, Reading RG1 602, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"33","published-online":{"date-parts":[[2006,10,4]]},"reference":[{"issue":"6","key":"2019100512574359400_c1","doi-asserted-by":"crossref","first-page":"668","DOI":"10.1016\/j.jse.2004.04.008","article-title":"The Effects of Glenoid Component Alignment Variations on Cement Mantle Stresses in Total Shoulder Arthroplasty","volume":"13","author":"Hopkins","journal-title":"J. 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