RSI is a diffuse disorder of muscle, fascia, tendon and/or neurovascular structures. Some sources include disorders of the lower back and lower extremeties in the definition of RSI.
RSI conditions occur in both upper and lower limbs. In the last decade, hundreds of thousands of otherwise healthy individuals have developed a painful, debilitating and sometimes disabling condition known as Repetitive Strain Injury (RSI).
RSI is also known as Work Related Musculoskeletal Disorder (WRMSD), Cumulative Trauma Disorder (CTD), Computer Related Injury (CRI), Work Related Upper Limb Disorder (WRULD), and Occupational Overuse Syndrome (OOS).
Some specific condition grouped under RSI included adhesive capsulitis , bursitis , carpal tunnel syndrome , cervical spondylosis , cubital tunnel syndrome , De quervains syndrome , dupuytrens contracture , tennis elbow , ganglion cyst , rotator cuff syndrome , tendonitis , tenosynovitis , trigger finger , vibration induced white finger.
RSI is a multifactorial complaints syndrome affecting the neck, upper back, shoulder, upper and lower arm, elbow, wrist or hand, or a combination of these areas, which leads either to impairment or to participation problems. The syndrome is characterised by disturbance in the balance between load and physical capacity, preceded by activities that involve repeated movements or prolonged periods spent with one or more of the relevant body parts in a fixed position as one of the presumed etiological factors (Health Council of the Netherlands, The Hague, 2000: Publication No. 2000/22E, p. 18).