Comparison of Interscalene and Anterior Shoulder Capsule Block

After sterile conditions are provided with the patient in the supine position, the brachial plexus will be identified in the supraclavicular fossa above the clavicle with ultrasonography. The transducer will be directed cephalad and 20 cc 0.5% bupivacaine will be applied to the interscalene space with a 50 mm block needle from the point where the C 5-6-7 nerve roots give the impression of a rosary bead between the anterior and medial scalene muscles.

In pericapsular nerve block application, the patient will be placed in a supine position and the arm will be externally rotated and abducted to 45 degrees. After sterile conditions are provided, the humerus head, the tendon of the subscapularis muscle and the deltoid muscle above it will be identified with ultrasonography. 15 cc of 0.5% bupivacaine will be injected into the interfascial space between the deltoid muscle and the subscapularis muscle with a 22gauge 50 mm block needle. Then, the block needle will be directed deep into the subscapularis muscle and another 5 cc of 0.5% bupivacaine will be injected under the subscapularis muscle.