Upper Limb Dynamic Mechanical and Anatomical Properties Among Assembly Operators

Details

• Personal Author:
  Best TM ; Block WF ; Radwin RG ; Sesto ME
• Description:
  This study investigated upper limb mechanical and anatomical properties in assembly workers. Fourteen male assembly workers were recruited from selected jobs including power hand tool users and non-power hand tool users. Active dynamical mechanical properties of the upper extremity were measured using a free vibration apparatus. All workers underwent a physical examination, magnetic resonance imaging and completed a symptom survey. Employees were categorized as asymptomatic versus symptomatic based on reported forearm symptoms and physical exam findings. Symptomatic individuals had 46% less mechanical stiffness and a 59% less mass moment of inertia of the forearm than the asymptomatic group. Workers were stratified based on power tool use and two of the seven subjects who regularly used power nut runners demonstrated MRI T2 enhancement, which is indicative of muscle edema. T2MRI enhancement was not demonstrated in the seven subjects who did not regularly use power nut runners. [Description provided by NIOSH]
• Subjects:
  Cumulative Trauma Disorders Ergonomics Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety Workplace
• Keywords:
  Body-mechanics Cumulative-trauma Cumulative-trauma-disorders Hand-tools Human-factors-engineering Injuries Injury-prevention Muscle-contraction Muscle-function Muscle-physiology Muscle-stress Muscle-tension Muscles Muscular-disorders Musculoskeletal-system Musculoskeletal-system-disorders Posture Power-tools Repetitive-work Statistical-analysis Work-environment Work-operations Work-performance Work-practices Worker-health Workplace-monitoring Workplace-studies

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• ISBN:
  0945289227
• Publisher:
  Human Factors and Ergonomics Society
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 10 ; OSHA Region 5 ; Washington ; Wisconsin
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20027120
• Citation:
  Human Factors and Ergonomics Society 47th Annual Meeting. Santa Monica, CA: Human Factors and Ergonomics Society, 2003 Oct; :1265-1268
• Federal Fiscal Year:
  2004
• NORA Priority Area:
  Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
• Performing Organization:
  University of Wisconsin, Department of Biomedical Engineering, Madison, WI
• Peer Reviewed:
  False
• Start Date:
  19960901
• Source Full Name:
  Human Factors and Ergonomics Society 47th Annual Meeting
• End Date:
  20010831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5801afb2fa08a74be2ff200f31d978fbe24f465a37ca0c05b57d64a9f7a2e0bd456771cf7650bbcb2cc9c081bc6402aa09c4bf98673e29eb321ded6fe930b16c
• Download URL:
  https://stacks.cdc.gov/view/cdc/197466/cdc_197466_DS1.pdf
• File Type:
  [PDF - 525.21 KB ]