ON MONDAY APRIL 30TH IT WAS DETERMINED THIS INJURY WOULD BECOME A DEGREE 3. AFTER REVIEWING THE MEDICAL REPORTS. EMPLOYEE WAS INJURED 3-6-01. WHILE PULLING A NEW SCREW SECTION INTO POSITION IN SCREW HOUSING OF CS-3606, EMPLOYEE FELT A POP IN HIS RIGHT ARM. DIAGNOSIS WAS A BRACHIORADIALIS MUSCLE STRAIN.