Experimental: LV-ISBP block Group (n=40): US-guided low volume interscalene brachial plexus block

Patient in a semi-sitting position with the head tilted to the opposite side of the injection site. A linear US probe (4-12 MHz) will be placed parallel to the clavicle in the supraclavicular fossa, and the subclavian artery will be seen beating above the first rib.Then the probe will be moved cranially to identify the transverse process of the C7 vertebra at the level of the brachial plexus roots between the scalenus anterior and medius muscles.The needle will be inserted in a plane approach from lateral to medial to scalenus medius and C5-C6 brachial plexus roots. After negative aspiration, a total of 5 mL of bupivacaine 0.5% will be injected incrementally.

Active_comparator: PENG block Group (n=40): US-guided pericapsular nerve group block for shoulder

The patient's arm was placed in external rotation and abducted at 45 degrees. A linear US probe (4-12 MHz) will be placed longitudinally between the coracoid and the humeral head, visualizing the deltoid muscle and subscapularis tendon. 22-gauge needle will be advanced in-plane into the fascial plane between the deltoid muscle and subscapularis tendon. The location of the needle tip will be confirmed by hydrodissection of inter-fascial planes with 3 ml of normal saline. After negative aspiration, a total of 20 mL of bupivacaine 0.5% will be injected in the fascial plane incrementally, aspirating every 5 ml.