A Method for Measuring External Spinal Loads During Unconstrained Free-Dynamic Lifting

Details

• Personal Author:
  Fathallah FA ; Granata KP ; Marras WS ; Parnianpour M
• Description:
  Biomechanical lifting models often require the knowledge of the applied trunk moments and forces for model validation purposes and/or to determine loading levels experienced at various joints of the body. Trunk kinetic data under dynamic exertions are commonly difficult to attain without restrictive anatomic/anthropometric assumptions and cost or constraining body motion. The main objectives of the study were to present a new technique for determining continuous three-dimensional forces and moments about the L5/S1 spinal joint, and to validate the technique and assess its applicability under lifting situations. A combination of a force plate and two electrogoniometers facilitated the determination of trunk kinetics about L5/S1. An apparatus was devised to allow the application of various actual moments that were compared to their corresponding predicted moments. The results showed that, over all the conditions considered, the average percent error in estimating the actual applied moment(s) was about 4% (2.3 S.D.), with a test-retest reliability approaching unity. Given such agreement, along with the relative ease and directness of the method, it is believed that this approach should be applicable under most lifting conditions. The technique offers a fairly accurate measure of trunk moments without the need for constraining the motion of any body joint. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Body Weight Nervous System Occupational Health Safety
• Keywords:
  Anthropometry Biomechanical-engineering Biomechanical-modeling Biomechanics Biomedical-engineering Body-mechanics Body-protection Body-weight Job-analysis Kinetics Spinal-cord Spinal-cord-disorders Spinal-shock Weight-factors

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• ISSN:
  0021-9290
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  California ; Ohio ; OSHA Region 5 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  30
• Issue:
  9
• NIOSHTIC Number:
  nn:20033067
• Citation:
  J Biomech 1997 Sep; 30(9):975-978
• Contact Point Address:
  Fadi Fathallah, Liberty Mutual Research Center, 71 Frankland Road, , Hopkinton, MA 01748, , USA
• Federal Fiscal Year:
  1997
• Performing Organization:
  University of California - Davis
• Peer Reviewed:
  True
• Start Date:
  19900930
• Source Full Name:
  Journal of Biomechanics
• End Date:
  20020929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a44295efd6ddefa3399e2f37c1085827f1da9a52f84884197267199071c59252a094849dd3c628e37f0e035f87008efcf64f47455f46b03470ec084f6fc1c6de
• Download URL:
  https://stacks.cdc.gov/view/cdc/188785/cdc_188785_DS1.pdf
• File Type:
  [PDF - 684.17 KB ]