{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T11:55:34Z","timestamp":1790855734480,"version":"4.1.0"},"reference-count":23,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2010,4,22]],"date-time":"2010-04-22T00:00:00Z","timestamp":1271894400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Proc Inst Mech Eng H"],"published-print":{"date-parts":[[2010,9,1]]},"abstract":"<jats:p>The aim of this study was to use a biomechanical model of the shoulder to examine the characteristics of two concepts of reverse anatomy implant; those that preserve the natural glenohumeral centre such as the Bayley\u2014Walker (B\u2014W) replacement and those medializing it such as Delta. A biomechanical model of the shoulder was used to evaluate the biomechanical characteristics of these prostheses. The moment arms of the shoulder muscles were predicted for the implanted models over a wide workspace and were compared to those of natural anatomy. The deltoid muscle moment arms through almost all of the range of motion in the Delta model were greatest. As a result the shoulder joint contact force was decreased for this implant. Furthermore, although the B\u2014W model predicted similar moment arms to natural anatomy, the contact force decreased owing to change in the joint constraints. Finally, it was concluded that the reverse anatomy can compensate for loss of rotator cuff muscles in terms of joint stability, yet the shoulder function depends on the individual's musculature.<\/jats:p>","DOI":"10.1243\/09544119jeim759","type":"journal-article","created":{"date-parts":[[2010,4,26]],"date-time":"2010-04-26T21:03:55Z","timestamp":1272315835000},"page":"1039-1049","source":"Crossref","is-referenced-by-count":13,"title":["Reverse anatomy shoulder replacement: Comparison of two designs"],"prefix":"10.1177","volume":"224","author":[{"given":"M","family":"Masjedi","sequence":"first","affiliation":[{"name":"Bioengineering Research Group, Mechanical and Systems Engineering, Stephenson Building, Newcastle University, Newcastle upon Tyne, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G R","family":"Johnson","sequence":"additional","affiliation":[{"name":"Bioengineering Research Group, Mechanical and Systems Engineering, Stephenson Building, Newcastle University, Newcastle upon Tyne, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2010,4,22]]},"reference":[{"key":"bibr1-09544119JEIM759","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200003000-00002"},{"key":"bibr2-09544119JEIM759","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199501000-00002"},{"key":"bibr3-09544119JEIM759","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-200006000-00030"},{"key":"bibr4-09544119JEIM759","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9290(01)00097-5"},{"key":"bibr5-09544119JEIM759","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-199609000-00030"},{"key":"bibr6-09544119JEIM759","doi-asserted-by":"crossref","unstructured":"Nyffeler R. W., Sheikh R., Jacob H. A., Gerber C. \u2018Influence of humeral prosthesis height on biomechanics of glenohumeral abduction. An in vitro study.\u2019 J. Bone Joint Surg. Am. 86-A (3) (2004): 575\u2013580","DOI":"10.2106\/00004623-200403000-00017"},{"issue":"8","key":"bibr7-09544119JEIM759","volume":"220","author":"Charlton I. W.","year":"2006","journal-title":"Proc. IMechE, Part H: J. 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