Repetitive Strain Injury (RSI) in the U.S.: Prevalence and Prevention

RSI (musculoskeletal disorders from repeated microtrauma) affects an estimated 1.8–4.7 million U.S. workers annually (BLS, OSHA), with broader impact including musicians, gamers, athletes, and hobbyists.

Common Diagnoses

• Carpal tunnel syndrome (median neuropathy at wrist).
• Tendinopathies: lateral epicondylitis, de Quervain’s, rotator cuff.
• Thoracic outlet syndrome, cubital tunnel, trigger finger.
• Low back/neck pain from sustained postures.

Risk Factors

• High repetition, force, awkward posture, vibration, cold, insufficient recovery.
• Psychosocial: high demand/low control, job insecurity.

Prevention Hierarchy

1. Engineering controls: Ergonomic workstations, tool redesign, automation.
2. Administrative: Job rotation, microbreaks (30 sec/10 min), pacing, training.
3. Personal: Stretching, strengthening, early symptom reporting.

Early Intervention

Symptom modification (activity modification, splinting, PT) within 4 weeks prevents chronicity. Employers benefit: $1 invested in ergonomics returns $3–10 in reduced WC costs.