Comparative Analysis of Ultrasound-Guided Versus Landmark-Based Techniques for Regional Anesthesia in Egyptian Patients

The operator will visualize anatomical structures in real time, identify the brachial plexus (supraclavicular approach), and guide the needle to the injection site under direct ultrasound visualization

The operator will identify anatomical landmarks (e.g., interscalene groove, supraclavicular fossa) using palpation and surface anatomy. The needle will be inserted based on these landmarks, with no direct visualization of internal structures.

injected in both group as local anesthetic agent ( at a standardized concentration and volume) to ensure comparability.