LOEANING ADROSS, THE FENDER OF AN R-22 EUCLID HAUL TRUCK, PICKED UP STARTER TO SET IN PLACE, AND NOTICED A PAIN IN THE RIGHT SIDE OF THE RIB CABGE. X RAYS REVEKED THAT FOUR RIBS HAD BEEN DISPL ACED. DID NOT KNOW THIS AT THE TIME. MENTIONED IT TO FOREMAN, BUT DID NOT SEEK HELP FOR SEVERAL WORKING IN SHOP DAYS. PERSONAL MATTER KEPT HIM FROM WORK FOR SEVERAL DAYS AND THE INCIDENT WENT