Efficacy and Safety of Superior Trunk Block Versus Interscalene Block for Post-operative Analgesia in Shoulder Surgeries

will receive a 20 ml mixture of local anesthetic solution prepared as 10 ml of bupivacaine 0.5% diluted with 10 ml normal saline 0.9% will be injected in interscalene block.

will receive a 20 ml mixture of local anesthetic solution prepared as 10 ml of bupivacaine 0.5% diluted with 10 ml normal saline 0.9% will be injected in superior trunk block.