Ultrasound Guided Suprascapular nerve block combined with intra-articular injection of bupivacaine versus ultrasound-guided interscalene nerve block in shoulder arthroscopy.

Shoulder surgery is usually associated with severe postoperative pain (1). The use of arthroscopy is popular because it is associated with less pain, shortens hospital stays, and improves patient satisfaction. However, immediate postoperative pain remains a problem in more than 40% of patients (1,2). The most effective method in controlling postoperative pain in shoulder surgery is regional nerve blocks, such as the interscalene nerve block (ISNB) and the suprascapular nerve block (SSNB) (1,3). In this study, we will evaluate the effectiveness of ultrasound-guided suprascapular nerve block combined with intra-articular injection of bupivacaine versus interscalene nerve block for postoperative analgesia in shoulder arthroscopic surgeries.