Shoulder Anterior Capsular Block and Interscalene Brachial Plexus Block for Shoulder Arthroplasty

The aim of our study is to reveal a comparison between interscalene brachial plexus block and shoulder anterior capsular block with respect to their efficacy on pain relief during perioperative anesthetic management. As intraoperative hemodynamic stability is an important factor for surgeons to achieve better outcomes because of its effect on the quality of arthroscopic visualization for shoulder arthroplasty, the investigators will also observe the effects of this matter.50 patients scheduled for elective surgery will be randomized by closed envelope method into two groups (n=20) receiving either interscalene brachial plexus block or shoulder anterior capsular block preoperatively. Each group receives standardized general anesthesia and perioperative pain management protocol. Data to be recorded are numeric rating scales, intraoperative and postoperative analgesic use, intraoperative hemodynamic parameters, and arthroscopic visualization score. Moreover, block performance time, motor block, and side effects or complications will be noted.

Inclusion Criteria:Patients who have been diagnosed with rotator cuff rupture and admitted to receiving arthroscopic cuff repair surgeryAmerican Society of Anaesthesiologists (ASA) Physical Status classification I to IIIPatients who will give informed consent to peripheral nerve blocksExclusion Criteria:Refusal to participate in the studyHistory of neurologic deficits or neuropathy affecting the brachial plexusInfection at the site of the block applicationCoagulopathyPre-existing respiratory dysfunctionAllergy to local anestheticsUncooperated patients who cannot reliably answer verbal pain evaluation