Repetitive Strain Injuries (RSI) is really a blanket name for health problems that result from over-use or misuse of muscles, tendons, and nerves. Unlike strains and sprains, which occurs from a single incident, RSIs develop over time.
RSIs are the most common form of occupational (workplace) illness; some so crippling that sufferers may require surgery or face permanent disability. Though RSI is not localized to any one type of job, the odds are higher for occupations that involve repetitive work, such as, working at the assembly line, food processing jobs, or at visual display terminals. It can take years to develop and therefore tend to strike when the worker is in his prime of career usually around the age of 40.