Biomechanical Computation of Shoulder Strain During Multi-Directional Forceful Arm Exertions

Details

• Personal Author:
  Eddy M ; Moore C ; Nimbarte A
• Description:
  Musculoskeletal modeling software was used to perform simulations of static force exertions of the right upper limb. A series of 36 force exertions in directions at 30 degree intervals in the transverse, sagital, and frontal planes were performed using three muscle recruitment optimization algorithms. The 36 exertions were performed first using a force of 40 N and then again with 80 N, to compare the effect of amount of force exerted. A previously validated strain index equation was used to calculate risk injury for each force exertion based on the magnitude and direction of the resultant glenohumeral force. Generally, highest strain values were found in the downward, backward, and leftward direction and lowest strain values were found in the upward, forward, and rightward direction, or, in other words, during force exertions opposing forces in those directions. In general, all three recruitment strategies agreed except polynomial recruitment in the transverse plane. In regard to the two different forces, the trends for the 40 N and 80 N trials were similar. In all three planes, the variability of the range of strain values was reduced with an increase in force. Strain values in the transverse plane reduced in almost every direction, suggesting that a stronger force in the backward direction may not increase the strain on the shoulder. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Musculoskeletal System Occupational Health Safety Software
• Keywords:
  Author Keywords: Musculoskeletal Modeling Biomechanical Modeling Biomechanics Computer Software Force Muscle Function Musculoskeletal System Shoulder Strain Static Force Exertions Upper Extremities
• ISBN:
  9781938496561
• Publisher:
  International Society for Occupational Ergonomics and Safety (ISOES)
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20063445
• Citation:
  Proceedings of the XXXth Annual International Occupational Ergonomics and Safety Conference, June 7-8, 2018, Pittsburgh, Pennsylvania. Amsterdam: International Society for Occupational Ergonomics and Safety (ISOES), 2018 Jun; :032-033
• Contact Point Address:
  Ashish Nimbarte, Industrial and Management Systems Engineering, West Virginia University, Morgantown, WV, USA
• Email:
  Ashish.Nimbarte@mail.wvu.edu
• Federal Fiscal Year:
  2018
• Performing Organization:
  West Virginia University
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  Proceedings of the XXXth Annual International Occupational Ergonomics and Safety Conference, June 7-8, 2018, Pittsburgh, Pennsylvania
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2da2cbd29dd8cfdc8ede8e640c06d570535dad7a50f681033f802f7a6940b653a91c79002f7187d25facaf47e6f9479d0c499d5372ac32072d863d058dd912e5
• Download URL:
  https://stacks.cdc.gov/view/cdc/226510/cdc_226510_DS1.pdf
• File Type:
  [PDF - 1.45 MB ]