Evaluation of Shoulder Strain During Multi- Directional Forceful Arm Exertions

Details

• Personal Author:
  Eddy M ; Moore C ; Nimbarte A
• Description:
  BACKGROUND: Forceful exertions of the arm/shoulder are common during material handling and many other industrial tasks. Determination of how the risk of shoulder injury changes in conjunction with direction of force exertion could provide useful guidance on the design of workplaces and tasks. OBJECTIVE: This research was conducted to determine how direction of force exertion and muscle recruitment algorithm effect shoulder strain computed by musculoskeletal modeling. METHODS: 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. 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. RESULTS: 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. CONCLUSIONS: When designing workplace tasks that involve forceful exertions of the shoulder, pulling and downward pushing exertions should be given preference over pushing and lifting exertions. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety
• Keywords:
  Author Keywords: Musculoskeletal Modeling Biomechanics Ergonomics Force Lifting MSD Musculoskeletal Disorders Shoulder Strain Static Force Exertions Upper Extremities
• ISSN:
  1359-9364
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  131-138
• Volume:
  13
• Issue:
  3
• NIOSHTIC Number:
  nn:20063419
• Citation:
  Occup Ergon 2017 May; 13(3-4):131-138
• Contact Point Address:
  Ashish D. Nimbarte, Industrial and Management Systems Engineering, West Virginia University, PO Box 6070, Morgantown, WV 26506-6107, USA
• Email:
  Ashish.Nimbarte@mail.wvu.edu
• Federal Fiscal Year:
  2017
• Performing Organization:
  West Virginia University
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Occupational Ergonomics
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a3b2fc4c7698131be527054017e4dc13fe9b7b3364b73ee0bf9908b1e6e49a7aec63b799f5afe867f55989b95852a8000df381bf488643492e467a1821869372
• Download URL:
  https://stacks.cdc.gov/view/cdc/226485/cdc_226485_DS1.pdf
• File Type:
  [PDF - 1.44 MB ]