WHILE KNEELING AND TWISTING, EMPLOYEE TWISTED KNEE WHILE CHANGING SCREENS IN A SMALL AREA IN PLANT. EE'S KNEE BECAME SWOLLEN AND MORE PAINFUL DURING THE EVENING AND EE WAS SEEN AT THE EMERGENCY ROOM. EE IS NOW BEING EVALUATED BY AN ORTHOPEDIC SURGEON AND IS UNABLE TO RETURN TO WORK FOR AN UNSPECIFIED LENGTH OF TIME.