EE WAS IN THE PROCESS OF WELDING 1/2"" STEEL PLATE TO THE OUTSIDE OF THE 375 EXCAVATOR BUCKET. WHEN HE LIFTED THE PLATE INTO POSITION, HE RESTED IT JUST ABOVE HIS RIGHT KNEE. SEVERAL DAYS LATER THE KNEE SWELLED UP, BUT THERE WAS NO PAIN. HE VISITED A DOCTOR ON 10/30/02 AS THE KNEE WAS NOT IMPROVING. DIAGNOSED WITH POST TRAUMATIC PATELLAR FEMORAL SYNDROME OR WATER ON THE KNEE.