Over years, many more techniques were developed as the plexus is accessible at different anatomical regions depending on the clinical purpose required. In 1970, Alon Winnie described the first consistently effective and technically suitable approach to the brachial plexus block at the level of the cricoid cartilage between the anterior scalene and middle scalene muscles called as interscalene brachial plexus block. This was a prospective observational study started after attaining approval from the departmental dissertation committee and institutional ethics committee. Clinical Trials Registry-India (CTRI) registration was also obtained. Informed consent was taken by all patients included. In DMD group, 30 subjects belong to ASA-PS-I and 16 subjects belong to ASA-PS-II, In DXM group, 35 subjects belong to ASA-PS-I and 11 subjects belong to ASA-PS-II. The mean duration of surgery in DXM group was 115.52 mins and in DMD group was 119.67 mins.