1. Ergonomics
Making the job fit the worker

2. Ergonomics looks at: Work station Tools Motions Physical condition
Physical limitations
Environment 1

3. Musculoskeletal disorders
Musculoskeletal disorders = MSDs 2a

4. MSD symptoms Dull, aching sensation Discomfort with movements
Tenderness to the touch
Burning sensation
Pain
Tingling
Cramping
Stiffness 2b

5. Common MSDs Tendinitis Tenosynovitis Trigger finger Raynaud’s syndrome
De Quervain’s disease
Carpal tunnel syndrome 2c

6. Workplace risk factors
Repetitive motions
Fixed / awkward postures
Vibration
Force
Twisting / bending
Elevation of elbows
Lifting 3a

7. Workplace risk factors
Inappropriate tools
Continuous contact
Restricted clearance
Improper seating/support
Bad body mechanics
Inadjustable equipment 3b

8. Identify risk factors Management/employee involvement
Audit work stations
Audit procedures 4

9. Engineering Controls Preferred method Work station design Tool design
Equipment design 5

10. Work station design Provide adequate: Work space Work height Support
Storage space
Machine controls 6

11. Work station redesign Reduce static loading
Raise / lower working height
Remove hard / sharp edges
Provide mechanical advantages
Insulate heat / cold
Provide seating / support
Improve material orientation
Improve layout 7

12. Tool selection should minimize:
Awkward, bent grip
Vibration
Excessive grip strength
Awkward positions to exert force
Repetitive motions 8

13. Administrative Controls
Job rotation
Shift length
Overtime management
Rest breaks
Production rates 9

14. Work practice controls
Use proper techniques
Avoid unnecessary steps
Job training
Exercise/ conditioning 10

15. Medical Management Early reporting & treatment Symptoms survey
Medical treatment
Recordkeeping 11

16. Back disorders Sprains Strains Ruptured/ slipped disks Muscle spasms

17. Back pain factors Improper posture Poor physical condition
Improper lifting
12b

18. Proper lifting Size up the load Bend your knees Do not twist
Clear path
Lower slowly
Push carts/dollies
12c

19. Summary Define ergonomics MSDs Risk factors Controls
Medical management
Proper lifting 13