Effectiveness of Serratus Posterior Superior Intercostal Plane Block Applied With Ultrasonography in Myofascial Pain Syndrome

The serratus posterior superior muscle is located deep to the rhomboid major and minor. Ligamentum nuchae starts from the processus spinosus of C7-T3 vertebrae and extends to the 2nd-5th. In the ribs, the angulus ends at the upper edge of the rib. Serratus posterior superior -intercostal plane block (SPSİPB) is a newly defined block, and C7-T7 spread has been shown in cadaver studies