MAN DRIVING A TRACTOR DOWN INCLINE; TRACTOR LOST HYDRAULIC OIL, CAUSING IT TO FREE WHEEL. HE CAME OFF TRACTOR, LANDING ON KNEE, NECK & SHOULDER. MEDICAL EXAM REVEALED NO INJURIES; 2ND OPINIO N ON 7/28/00 SUGGESTS LIGAMENTOUS STRAIN/SPRAIN & 2 VISITS SCHEDULED FOR PHYSICAL THERAPY ON 8/8 AND 8/10/00.