Understanding Vibration Injury

Details

• Personal Author:
  Riley, Danny A.
• Description:
  This research sought to characterize shock wave vibration and investigate its ability to damage nerves in an animal model simulating hand arm vibration exposure. These studies cannot be performed on humans because of the high potential for hand injury. Shock waves from impact tools contain kHz vibration energy that is 10-50 fold greater than that in the low frequency (30-250 Hz) range typical of sinusoidal nonimpact tools. The ISO 5439 exposure risk calculation reduces acceleration above 16 Hz by progressive frequency weighting so that contributions from frequencies 1.6 kHz (reduced 100 fold) and up are essentially nil. The present research findings challenge this approach because of the high energy generated by impact tools and the occurrence of nerve damage. These results are being used by others working on expanding ISO 5349 with options to factor in kHz vibration. We repurposed an inexpensive piezoelectric sensor to enable measurement of the 5 Hz to 25 kHz power spectrum of vibration magnitudes. This technology has been shared with other researchers investigating shock wave vibration contributions to hand arm vibration syndrome. Instrumenting tools in the work place with broad band sensors has the potential to improve the accuracy of daily vibration exposure and thereby, aiding adjusting work practices to stay below the exposure action value. An intermediate outcome is that workers using impact tools and wearing antivibration gloves can block kHz vibration energy generated by the tool. [Description provided by NIOSH]
• Subjects:
  Animals Environmental Exposure Laboratories Musculoskeletal System Nervous System Nervous System Diseases Occupational Diseases Occupational Exposure Occupational Health Risk Assessment Risk Factors Safety Vibration

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• Keywords:
  Arm-injuries Cell-damage Exposure Levels Hand-injuries Injuries Injury-prevention Laboratory Animals Models Neurovascular-disorders Occupational-diseases Occupational-exposure Risk Factors Vibration-effects Vibration-exposure

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• Series:
  Grant Final Reports
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Final Grant Report
• Place as Subject:
  OSHA Region 5 ; Wisconsin
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OEP - Office of Extramural Programs
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-8
• NIOSHTIC Number:
  nn:20052496
• NTIS Accession Number:
  PB2018-101544
• Citation:
  Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, R01-OH-003493, 2016 Nov; :1-8
• Contact Point Address:
  Danny A Riley, PhD, Medical College of Wisconsin 8701 Watertown Plank Road Milwaukee, WI 53226
• Email:
  dariley@mcw.edu
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Construction
• Performing Organization:
  Medical College of Wisconsin, Milwaukee, Wisconsin
• Peer Reviewed:
  False
• Start Date:
  19990901
• Source Full Name:
  National Institute for Occupational Safety and Health
• End Date:
  20160831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:81c3c5fab6c5f8eeeba9d76450e46b7ea786d9030b9d1ddb4d38a3cbf939c130b7416875fd3f287dd6933411254ae35b350441dfe373727d3c58c9fee060596c
• Download URL:
  https://stacks.cdc.gov/view/cdc/218708/cdc_218708_DS1.pdf
• File Type:
  [PDF - 168.30 KB ]