Fig. 1From: Comparison of analgesic efficacy of different local anesthetic volumes for erector spinae plane block in thoracotomy patients; a prospective randomized trialAnatomical view during Erector Spina Plane Block. A: The view of the block needle below the erector spinae muscle and above the transverse process. B: 0.25% bupivacaine was administered beneath the erector spinae muscle. The local anesthetic spread cranially and caudally beneath the erector spinae muscle Back to article page