WHILE CLIMBING A LADDER TO THE MACHINE CAB, THE EMPLOYEE STEPPED ON THE EDGE OF HIS RIGHT BOOT WITH HIS LEFT FOOT. WHEN HE ATTEMPTED TO MOVE HIS RIGHT FOOT AGAIN, HE FELT A PAIN IN HIS RIGHT H IP/LEG. THIS RESULTED IN A STRAIN TO THE MUSCLES AND HAMSTRING IN THE RIGHT LEG. THE EMPLOYEE'S WORK DUTIES WERE RESTRICTED.