Unit Statistical Report. Data, including losses and payroll by classification, resulting from every workers' compensation insurance policy written in California is reported to the WCIRB in a Unit Statistical Report (USR).
Carpal tunnel syndrome can cause left arm weakness. Tendinitis can cause left arm weakness. Left arm weakness can be an early sign of a heart attack. A sprained elbow can be the cause of left arm weakness. Typing on a keyboard can be hard on the wrists, possibly aggravating carpal tunnel problems. A pinched nerve in the neck may cause left arm weakness.
If you have elbow pain, some of the more common causes include: 1  Lateral Epicondylitis. 2  Medial Epicondylitis. 3  Olecranon Bursitis. 4  Tendonitis. Cubital Tunnel Syndrome.  Radial Tunnel 1  Syndrome. Elbow Fractures.  Elbow Dislocation.