THE EE'S RIGHT KNEE WAS SWOLLEN ON 4-13-02. HIS FIRST MISSED DAY OF WORK WAS ON 4-15-02. HE VISITED 3 DIFFERENT DR.'S TAKING ANTI-FLAMATORY MEDICATION. UNTIL ON 4-22-02 HE VISITED A SPECIALIST WHO DRAINED HIS KNEE AND SAID IT CAME FROM WORKING ON HIS KNEES. THERE WAS NO EXACT INCIDENT WHERE HE BUMPED OR HURT HIS KNEE.