Repetitive stress injury definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now! Like other critics of the maquiladora industry, Nuñez maintains that corporations mistreat workers by exposing them to dangerous substances and repetitive stress injuries, firing them if they speak out, and by paying them low wages, which forces them to live in desperate living conditions. The injury is common amongst gamekeepers and skiers and can cause swelling and pain to the thumb. Ganglion. A Ganglion cyst is a fairly common form of a repetitive strain injury (so much so that I currently have one on my middle finger!). The cyst forms when tissues surrounding various joints become inflamed and will swell containing fluid. Start studying Repetitive Strain Injuries. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Repetitive stress injury definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now! Repetitive strain injury (RSI) is a general term used to describe the pain felt in muscles, nerves and tendons caused by repetitive movement and overuse. It's also known as work-related upper limb disorder, or non-specific upper limb pain.