EE WAS TAKING AN 8 FOOT 2 INCH HOSE FROM THE YARD CREW STORAGE SHED. HE PUT THE HOSE ON HIS SHOULDER AND STARTED OUT OF THE SHED. ONE END OF THE HOSE THAT WAS BEHIND HIM GOT HUNG UP AS HE EXIT ED THE DOOR. HE PULLED HARD ON THE HOSE TO FREE IT. WHEN THE HOSE BROKE FREE, HE LOST HIS BALANCE AND FELL HITTING HIS ARM ON SIDE BOARDS OF TRAILER.