EMPLOYEE WAS DESCENDING A FIXED LADDER. HE GOT HIS FOOT LODGED BETWEEN THE LADDER RUNG AND A STRUCTURE BEAM AND SPRAINED HIS RIGHT FOOR. HE CONTINUED WORKING THRU 8-6-01 WHEN HE SOUGHT TREATME NT FOR A SORE FOOT. DOCTOR TOLD EE TO STAY OFF FOOT FOR SEVERAL DAYS.