Ergonomics Making the job fit the worker

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

Musculoskeletal disorders Musculoskeletal disorders = MSDs 2a

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

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

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

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

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

Engineering controls Preferred method Work station design Tool design Equipment design 5a

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

Work station design Reduce static loading Raise / lower working height Remove hard / sharp edges Provide mechanical advantages Insulate heat / cold 7a

Work station redesign Provide seating / support Improve material orientation Improve layout 7b

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

Administrative controls Job rotation Shift length Overtime management Rest breaks Production rates 9a

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

Medical management Early reporting & treatment Symptoms survey Medical treatment Recordkeeping 11a

Back disorders Sprains Strains Ruptured/ slipped disks Muscle spasms 12a

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

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

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