Musculoskeletal Disorders

Common Musculoskeletal Disorders

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Musculoskeletal Disorders & Lean Manufacturing

Work-related Musculoskeletal Disorders (WMSDs) are among the most common disorders to be considered in designing workcells and work stations. Here are the most common WMSDs, symptoms and risk factors. See also our Biomechanics page.

Other Terms for WMSD

Repetitive motion injuries
Repetitive strain injuries
Cumulative trauma disorders
Overuse syndrome
Soft tissue disorders

Disorders	Occupational risk factors	Symptoms
Tendonitis/tenosynovitis	Repetitive wrist motions Repetitive shoulder motions Sustained hyper extension of arms Prolonged load on shoulders	Pain, weakness, swelling, burning sensation or dull ache over affected area
Epicondylitis (elbow tendonitis)	Repeated or forceful rotation of the forearm and bending of the wrist at the same time	Same symptoms as tendonitis
Carpal tunnel syndrome	Repetitive wrist motions	Pain, numbness, tingling, burning sensations, wasting of muscles at base of thumb, dry palm
DeQuervain's disease	Repetitive hand twisting and forceful gripping	Pain at the base of thumb
Thoracic outlet syndrome	Prolonged shoulder flexion Extending arms above shoulder height Carrying loads on the shoulder	Pain, numbness, swelling of the hands
Tension neck syndrome	Prolonged restricted posture	Pain

Ergonomic Series Articles

Ergonomics In Lean Manufacturing

Physiology
Biomechanics In Workstation Design
Anthropometry
Man-Machine Allocation
Musculoskeletal Disorders
Principles of Ergonomics
Ergo Download

Balancing The Work In Workcells

Facilities Planning-- Micro-Layouts & Workcell Design

Workcell Design Seminar

Workcell Kaizen Blitz

References

http://www.ccohs.ca/oshanswers/diseases/rmirsi.htm

ANSI/HFES100-1988, Human Factors & Ergonomic Society, 1988.

Barnes, Ralph M., Motion and Time Study, Second Edition, John Wiley & Sons, New York, 1940.

Eastman Kodak Company, Ergonomic Design for People at Work, Van NostrandReinhold, New York, 1986.

Fraser, M., the Worker At Work, Taylor & Francis, New York, 1989.

Lee, Q, Nelson W., Amundsen, A., & Tuttle, H., Facilities and Workplace Design, Institute of Industrial Engineers, Atlanta, Georgia, 1996.

Woodson, Wesley E. and Conover, Donald W., Human Engineering for Equipment Design 2nd Rev. Edition, University of California Press, Berkely, 1966.

Zandin, Kjell B. and Maynard, Harold B., Industrial Engineering Handbook 5TH Edition, McGraw-Hill, New York, 2001.

Common Musculoskeletal Disorders

Disorders

Occupational risk factors

Symptoms

Ergonomic Series Articles