STEPPING OUT OF ARTICULATED TRUCK ONTO THE LADDER. HE BENT HIS KNEE THE WRONG WAY AND STRAINED KNEE. HE WORKED THE REMAINDER OF THE DAY AND ALSO THURSDAY AND FRIDAY BUT CONTINUED TO HAVE PAIN. HE WENT TO THE DOCTOR 11/13/01 AND REPORTED THE ACCIDENT. HE WAS OFF WORK THAT DAY AND 4 1/2 DAYS AFTER THAT FOR THERAPY.