THE INJURED EE WAS DISMOUNTING A CAT D-7 DOZER. AS HE STEPPED FROM THE TRACK ONTO THE BLAD PUSH ARM, HIS FOOT SLIPPED OFF OF THE PUSH ARM STEP ALLOWING HIS RIGHT SHIN TO CONTACT (SCRAPE) AGAIN ST THE TRACK PAD. THE ORIGINAL INJURY WAS A CONTUSION/ABRASION APPROX. 3"" LONG. 2 1/2 WEEKS POST INJURY THE EE HAS A MAJOR INFECTION OF THE INJURED AREA REQUIRING I-V ANTIBIOTICS (OUTPATIENT)