EMPLOYEE STATES THAT ON 12/13/00 WHILE DRIVING UP A RAMP ON A CAT 990 LOADER THE BACK REST ON THE SEAT SHIFTED AND FELT PAIN IN THE NECK. ON 12/20/00 HE REQUESTED TO SEE A DOCTOR AND WAS DIAGN OSED WITH A NECK STRIAN. RELEASED TO FULL DUTY, NO RESTRICTIONS AND SCHEDULED FOR THERAPY.