EE WAS CRAWLING UNDER THE DEMAG H135 EXCAVATOR CONDUCTING A PRE-SHIFT EXAMINATION. WHILE HE WAS CRAWLING, HIS LEFT KNEE STRUCK A ROCK ON THE GROUND. THE CONTUSION TO THE KNEE CAUSED PAIN & THE KNEE BEGAN TO SWELL. A COUPLE OF DAYS LATER, THEEE SOUGHT MEDICAL TREATMENT FOR THE SWOLLEN KNEEFLUID BUILD UP WAS DRAWN OFF OF THE KNEE. THE EEMISSED NO WORK.