EMPLOYEE WAS WALKING WHEN HIS LT. FOOT SLIPPED & TWISTED HIS KNEE. HE WORKED UNTIL 10/11/04 WHEN HE WENT TO THE HOSPITAL & WAS DIAGNOSED WITH A SPRAINED KNEE, REFERRED TO A SPECIALIST ON 10/12/04. HE WAS TOLD TO REMAIN OFF OF WORK UNTIL RE-EVALUATED ON 10/19/04.