Background: The conventional technique of interscalene brachial plexus block being a blind technique may be associated with higher failure rates and injury to nerves and vascular structures. Ultrasound (US) visualization of anatomical structure is only method offering safe blocks of superior quality by optimal needle positioning. Objectives: To compare the success rate, time taken for the procedure, onset time, duration of blockade and complications of the conventional approach of interscalene brachial plexus block performed versus US guided route.