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Kang, Sang Hoon
Robotics and Rehab. Engineering Lab (R2EL)
Research Interests
  • Rehabilitation Robotics & Mechatronic Tools, Biomechanics for Rehabilitation, Human Limb Impedance Estimation, Assistive and Healthcare robotics, Robust Motion/Force Control

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The anterior deltoid’s importance in reverse shoulder arthroplasty: a cadaveric biomechanical study

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dc.contributor.author Schwartz, Daniel G. ko
dc.contributor.author Kang, Sang Hoon ko
dc.contributor.author Lynch, T. Sean ko
dc.contributor.author Edwards, Sara ko
dc.contributor.author Nuber, Gordon ko
dc.contributor.author Zhang, Li-Qun ko
dc.contributor.author Saltzman, Matthew ko
dc.date.available 2015-08-11T00:07:42Z -
dc.date.created 2015-08-06 ko
dc.date.issued 2013-03 -
dc.identifier.citation JOURNAL OF SHOULDER AND ELBOW SURGERY, v.22, no.3, pp.357 - 364 ko
dc.identifier.issn 1058-2746 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/13404 -
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S1058274612000936 ko
dc.description.abstract Background: Frequently, patients who are candidates for reverse shoulder arthroplasty have had prior surgery that may compromise the anterior deltoid muscle. There have been conflicting reports on the necessity of the anterior deltoid thus it is unclear whether a dysfunctional anterior deltoid muscle is a contraindication to reverse shoulder arthroplasty. The purpose of this study was to determine the 3-dimensional (3D) moment arms for all 6 deltoid segments, and determine the biomechanical significance of the anterior deltoid before and after reverse shoulder arthroplasty. Methods: Eight cadaveric shoulders were evaluated with a 6-axis force/torque sensor to assess the direction of rotation and 3D moment arms for all 6 segments of the deltoid both before and after placement of a reverse shoulder prosthesis. The 2 segments of anterior deltoid were unloaded sequentially to determine their functional role. Results: The 3D moment arms of the deltoid were significantly altered by placement of the reverse shoulder prosthesis. The anterior and middle deltoid abduction moment arms significantly increased after placement of the reverse prosthesis (P < .05). Furthermore, the loss of the anterior deltoid resulted in a significant decrease in both abduction and flexion moments (P < .05). Conclusion: The anterior deltoid is important biomechanically for balanced function after a reverse total shoulder arthroplasty. Losing 1 segment of the anterior deltoid may still allow abduction; however, losing both segments of the anterior deltoid may disrupt balanced abduction. Surgeons should be cautious about performing reverse shoulder arthroplasty in patients who do not have a functioning anterior deltoid muscle. Level of Evidence: Basic Science Study, Biomechanics, Cadaver Model. (C) 2013 Journal of Shoulder and Elbow Surgery Board of Trustees. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher MOSBY-ELSEVIER ko
dc.subject Reverse total shoulder arthroplasty ko
dc.subject shoulder reconstruction ko
dc.subject deltoid ko
dc.subject flexion ko
dc.subject abduction ko
dc.subject moment arms ko
dc.subject cadaveric study ko
dc.title The anterior deltoid’s importance in reverse shoulder arthroplasty: a cadaveric biomechanical study ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84874259895 ko
dc.identifier.wosid 000317417400014 ko
dc.type.rims ART ko
dc.description.wostc 6 *
dc.description.scopustc 6 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1016/j.jse.2012.02.002 ko
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