PT ORGINALLY HAD SURGERY IN 2003. THE PT WAS EXPERIENCING PAIN POST-OPERATIVELY. POST-OP X-RAYS WERE PERFORMED AND REVEALED THAT THE LEFT ROD HAD SLIPPED 2" CEPHALLY. PT HAD A SECOND SURGERY IN 2003. DURING THE REVISION, BOTH SIDES WERE FOUND TO BE LOOSE. NEW VLS CAPS AND A ROD WERE PUT IN.