The association between combination of hand force and forearm posture and incidence of lateral epicondylitis in a working population

Details

• Personal Author:
  Bao S ; Bonauto DK ; Fan ZJ ; Howard NL ; Silverstein BA ; Smith CK
• Description:
  Objective: The objective of this prospective study is to investigate the exposure-response relationships between various workplace physical exposures of force, repetition, and their combination assessed at an individual level with lateral epicondylitis (LE). Background: Workplace upper extremity musculoskeletal disorders (UEMSDs) are prevalent, disabling, and expensive. LE is one of the major UEMSDs in active workers. Method: We used detailed health history, symptoms, and physical examination for identifying incidence and detailed exposure assessment to capture work tasks of each worker and to measure quantitative mechanical workload. We used counting process style input of proportional hazards regression for modeling cumulative incidence that accounts for changed exposure estimates during the follow-up period when respondents change jobs. Results: The incidence rate of LE on the dominant side was 4.91 per 100 person-years. Adjusted for age and gender, the combined effect of forearm pronation >45 for >40% of time and time spent with forceful exertion, including any power grip (hazard ratio [HR] = 2.8, 95% confidence interval [CI] = [1.35.5.77]), lifting for .3% of time (HR = 2.50, 95% CI = [1.19.5.24]), and duty cycle for forceful exertion for >10% (HR = 2.25, 95% CI = [1.09.4.66]), were significant predictors of dominant side LE, whereas neither the awkward posture nor the forceful exertion alone was significant. Older workers with jobs requiring a high percentage of time working with force in combination with awkward postures of forearm were more likely to predict LE. Conclusion: This study shows the evidence of the etiologic role of strenuous manual tasks in the occurrence of LE. [Description provided by NIOSH]
• Subjects:
  Aging Men Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety Women Workload
• Keywords:
  Age-groups Analytical-processes Author Keywords: Forceful Exertion Awkward Posture Of Forearm Exposure-levels Force Humans Incidence Lateral Epicondylitis Musculoskeletal-system Musculoskeletal-system-disorders Posture Repetitive-work Statistical-analysis Work-capacity Workers

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• ISSN:
  0018-7208
• Document Type:
  Text
• Funding:
  Cooperative Agreement ; Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 10 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  151-165
• Volume:
  56
• Issue:
  1
• NIOSHTIC Number:
  nn:20042909
• Citation:
  Hum Factors 2014 Feb; 56(1):151-165
• Contact Point Address:
  Z. Joyce Fan, Safety and Health Assessment and Research for Prevention (SHARP), Washington State Department of Labor and Industries, 243 Israel Rd SE Bldg 3, Tumwater, WA 98501
• Email:
  fanj235@LNI.wa.gov
• Federal Fiscal Year:
  2014
• Performing Organization:
  Washington State Department of Labor and Industries
• Peer Reviewed:
  True
• Start Date:
  20000930
• Source Full Name:
  Human Factors
• End Date:
  20060929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7f8b28d663e7c3692505989897019fe33fe11b1a0a3e68b8fd0d44f53516362966e10f09cab2add0f65a7264cc01128469bf0935db641c01f188275d6b00cb1c
• Download URL:
  https://stacks.cdc.gov/view/cdc/194977/cdc_194977_DS1.pdf
• File Type:
  [PDF - 382.19 KB ]