Boning Table at Poultry Plant

Task
To debone a chiocken breast with a knife.

Problem
This job requires frequent exertion of force, grasping, pushing, pulling, reaching, and constant standing. Among these risk factors, force, number of exertions in a given cycle, and posture are identified as key risk factors which contribute to the upper distal extremity injuries. Sustained non-neutral postures and localized mechanical stresses also contribute to injury.

Intervention
The modified Lazy Susan is a device of 16-inch diameter, which is designed as a cutting surface for the chicken breast. This is a built-in, adjustable, rotating device so that the position of the chicken breast can be easily manipulated. A foot pedal would be able to adjust the height and angle of the Lazy Susan.

Cost
US $2000

Evaluation of Intervention

  • Pros
  • Reduces forces on the non-dominant hand
  • Wrist remains in neutral during the cutting task, thereby eliminating awkward posture
  • Lazy Susan is easy to clean and very durable
  • Cons
  • Repetitive motion is not reduced
  • Possible sliding of poultry on cutting surface

Semi-Quantitative Evaluation of Intervention

  • Reduction of Identified Risk Factor
  • No New Risk Factors Introduced
  • Productivity not Reduced
  • Low Cost
  • Total
  • 2/5
  • 3/5
  • 5/5
  • 3/5
  • 13/20

Other Possible Interventions

  • New design of boning knife
  • Increased steeling of knife
  • Well-fitted gloves

Acknowledgements
Submitted by Evelyn Wong (UCSF) and Xing Chen (UC Berkeley)