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.
This condition is also called an elbow subluxation (a partial dislocation). Other common causes of elbow pain are: 1  Bursitis -- inflammation of a fluid-filled cushion beneath the skin.  Arthritis -- narrowing of the joint space and loss of cartilage in the elbow.