Background: Brachial plexus block provides surgical anaesthesia and analgesia and also provides postoperative analgesia. Nowadays regional blocks are increasingly used because of a higher success rate due to USG guidance and peripheral nerve stimulators. Regional blocks overcome the disadvantages of general anaesthesia like upper airway instrumentation and the use of multiple drugs. The supraclavicular approach for brachial plexus is the most consistent method of analgesia below the shoulder joint. Commonly used local anaesthetics are lignocaine and Bupivacaine. Ropivacaine is an amide local anaesthetic drug. The lower cardiotoxic potential, more rapid clearance and reduced motor block seen with Ropivacaine compared to Bupivacaine is advantageous especially when larger doses are required. The aim of my study is to assess the effectiveness of Ropivacaine compared to Bupivacaine in supraclavicular brachial plexus block