Quantitative biomechanical analysis of wrist motion in bone-trimming jobs in the meat packing industry

Area of Science:

• Occupational health
• Biomechanics
• Ergonomics

Background:

• Cumulative trauma disorders (CTDs) significantly impact the meat packing industry.
• There is a lack of quantitative data on hand and wrist kinematics in red-meat bone-trimming jobs.
• Understanding these motions is crucial for assessing CTD risk.

Purpose of the Study:

• To quantify the kinematics of hand and wrist motion in meat packing bone-trimming jobs.
• To compare these motions against established benchmarks for CTD risk.
• To establish a preliminary kinematic database for bone-trimming tasks.

Main Methods:

• Measured wrist motion of bone-trimming workers in a meat packing plant.
• Collected kinematic data for both left and right hands.
• Compared collected data to preliminary wrist motion benchmarks from industrial workers.

Main Results:

• Numerous wrist motion variables for bone-trimming workers fall into the high-risk category.
• Both left and right hands exhibited high-risk motion patterns.
• Quantitative biomechanical support for the high incidence of CTDs in the industry was found.

Conclusions:

• The study provides a preliminary database of wrist and hand kinematics for bone-trimming jobs.
• Findings support the high incidence of CTDs in the meat packing industry.
• Ergonomics practitioners can use these methods to assess CTD risk in repetitive, hand-intensive work.