THE INJURED WAS REMOVING THE BOLTS FROM THE U-JOINT. THE BOLTS BROKE LOOSE ON DIFFERENTIAL SIDE BUT NOT THE TRANSMISSION SIDE. THE INJURED WAS REACHING FOR A PRY BAR WHEN THE DRIVE LINE BROK E FREE AND FELL ONTO THE INJURED'S RIGHT THUMB. THIS CRUSHING INJURY REQUIRED SURGERY FOR REPAIRTHUS MAKING THIS A RECORDABLE INJURY.