,At this point, a Frazier dissector could be passed superiorly, inferiorly, medially, and laterally to the T11-T12 nerve roots bilaterally, and the thecal sac was noted to be decompressed both superiorly and inferiorly, and noted to be quite pulsatile. 
,At this point , a Frazier dissector could be passed superiorly , inferiorly , medially , and laterally to the T11 - T12 nerve roots bilaterally , and the thecal sac was noted to be decompressed both superiorly and inferiorly , and noted to be quite pulsatile .