Shoulder Block Versus Pericapsular Nerve Group Block for Shoulder Surgery

"A linear ultrasound probe will be placed longitudinally between the coracoid and the humeral head. After defining the humeral head, the tendon of the subscapular muscle and the deltoid muscle over it, the needle will be inserted using the in plane technique. When the needle will have passed through the deltoid muscle and touched the subscapularis tendon, a bone-like hard tissue will be felt and the needle could not be advanced further. The needle tip will be placed between the deltoid muscle and subscapularis tendon, and the injectate will be slowly administered."

The probe will be kept over the scapular spine to identify the trapezius and the supraspinatus muscle. Then, it Will be moved laterally to identify the concavity of the supraspinatus fossa and the hyper-echoic fascia of the supraspinatus muscle. In the concavity of the fossa, the suprascapular artery and the suprascapular nerve run in close proximity. A 50 mm nerve block needle will be used in the long axis view for the block. After confirming extravascular placement of the needle, injectate will be given below the supraspinatus fascia and then during axillary nerve block,The posterior surface of the humerus will be visualised in the short axis view. So, the circumflex artery will be visualised longitudinally. After confirming extra-vascular placement of the needle, injectate will be given into space.