A group of injuries known as repetitive strain injuries (RSI) impact the muscles, nerves, joints, tendons, and tendon sheaths. The areas where they most frequently cause chronic or recurrent pain are the neck, shoulders, forearms, hands, wrists, elbows, and lower limbs.
Injury from "repetitive strain" is a misnomer. In contrast to other diseases, RSIs are difficult to categorise since they involve a range of underlying causes, including damage to various body regions. Such injuries are referred to by a number of names, including occupational musculoskeletal disorder, cumulative trauma disorder, repetitive motion injury, overuse injury, and repeated trauma. The many names suggest that these injuries require repetition and may also be brought on by force, quick movement, overuse, static loading, severe strain, or unpleasant limb posture.