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The word "Ergonomics" comes from two Greek words "ergon," meaning work, and "nomos" meaning "laws." Today, however, the word is used to describe the science of "designing the job to fit the worker, not forcing the worker to fit the job." Ergonomics covers all aspects of a job, from the physical stresses it places on joints, muscles, nerves, tendons, bones and the like, to environmental factors which can effect hearing, vision, and general comfort and health.
Physical stressors include repetitive motions such as those caused by typing or continual use of a manual screwdriver. Other physical stressors could be tasks involving vibration such as using a jackhammer, or tasks which involve using excessive force, such as lifting a heavy box of books. Working in an awkward position, such as holding a telephone to your ear with your shoulder, can also cause problems. Repetitive motions, vibration, excessive force, and awkward postitions are frequently linked to ergonomic disorders; however, the majority of "Cumulative Trauma Disorders" (CTDs) or "Repetitive Strain Injuries" (RSIs), are caused by repetitive motions that would not result in undue stress or harm if only performed once. Carpal tunnel syndrome, Tendonitis, Tenosynovitis, DeQuarvain's Syndrome, Thoracic Outlet Syndrome, many back injuries, and several other conditions may result from repetitive motions.
