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.
Swelling of the elbow joint can cause ulnar nerve damage, states the AAOS. Swelling occurs in response to inflammation, than can occur with arthritis or injury to the elbow joint. Swelling increases the amount of fluid in a joint, which results in an increased pressure in the elbow joint.