A welder was positioning a 2 inch x 2 inch x ? inch x 8 foot brace using his left thumb. As he lifted the brace on one end, the other end of the brace fell to the ground. As a consequence of the jolt and vibration, the falling brace pinched the welder?s left thumb between brace and the support structure. As a result, the welder suffered an open fracture to the left thumb.