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1. RULA(RAPID UPPER
LIMB ASSESSMENT)
BY
KEERTHIKIRAN S
MPT 1ST
YEAR
RLJCOPT
MODERATED BY
LIKITH SIR
LECTURER
RLJCOPT

2. • Definition : The Rapid Upper Limb Assessment (RULA) is an ergonomic tool
designed to evaluate the risk of musculoskeletal disorders (MSDs) associated
with upper limb tasks.
• Purpose: RULA assesses biomechanical and postural loading, focusing on the
neck, trunk, and upper limbs during work activities.
Development and Validation :
• Developed by: Dr. Lynn McAtamney and Professor E. Nigel Corlett in 1993.
• Validation : RULA has been tested for reliability and validity in various
settings, making it a widely accepted tool in ergonomic assessments

3. Methodology of RULA :
• Observation and Interview :
Observe workers performing tasks while discussing concerns.
Identify postures held for extended periods or associated with high loads.
• Scoring System :
Assess body segments based on deviations from neutral posture.
Calculate scores for neck, trunk, and upper limbs using predefined tables.

4. Scoring System :
• RULA Score Range:
Minimum = 1 (low risk), Maximum = 7 (high risk).
• Action Levels:
Level 1 (1-2): Acceptable posture; no risk.
Level 2 (3-4): Investigate further; some risk present.
Level 3 (5-6): Poor posture; changes needed soon.
Level 4 (7+): Immediate risk; urgent changes required

9. Determine Final RULA Score:
Use Table C to determine the
final RULA score as shown
below.
Final RULA Score = 7
In this example, the final RULA
score of 7 indicates high risk
and calls for engineering and/or
work method changes to reduce
or eliminate MSD risk as
outlined in the chart.

10. Implemented Ergonomic Improvements:
• The assembly process was changed to install the access plate prior to riveting the can together.
• Fixture was fabricated to hold the can open while the access plate is being installed.
• A straight or “in-line” pneumatic screw driver (on a tool balancer) is now used to improve upper extremity
work postures and eliminate the force required.
• A follow-up analysis using the RULA worksheet was performed upon completion of this ergonomic process
and tool improvement.
• When using the new work process and tools, the RULA total score is reduced from 7 to 1.

11. Advantages of RULA
Quick and easy to use for assessing upper limb tasks.
Provides objective data to justify ergonomic interventions.
Useful for pre-and post-intervention assessments to demonstrate
improvements.
Enhances awareness of high-risk postures among workers.
Disadvantages of RULA
Results are relative; requires trained professionals for accurate interpretation.
May have limitations in reliability when used with specific populations, such
as younger children.
Not suitable as a standalone assessment tool; should be part of a broader
ergonomic evaluation.

12. Conclusion
• RULA is an essential tool for identifying ergonomic risks associated with
upper limb tasks.
• Its systematic approach aids in prioritizing interventions to reduce the risk of
musculoskeletal disorders.
• Effective use of RULA can lead to improved workplace safety and
productivity.

13. References
1.Ergo Plus. "A Step-by-Step Guide to the RULAAssessment Tool."
2.Morgan Maxwell. "Rapid Upper Limb Assessment (RULA) - A step by step
guide."
3.Core Concepts. "Rapid Upper Limb Assessment (RULA)."
4.Tumeke. "RULA: The Rapid Upper Limb Assessment - Comprehensive
Overview."

14. THANK YOU