Axillary Nerve Block Combined With Suprascapular Nerve Block

Suprascapular nerve block (SSNB) and axillary nerve block(ANB) were performed by one anesthesiologist under sono-guidance. 23 gauge spinal needle was used. SSNB was done at first and the entry site was the mid point between an anterolateral angle of acromion and medial end of scapular spine. With the linear probe, the suprascapular notch was identified and the block was performed penetrating the transverse scapular ligament because the scapular nerve and artery were located at the suprascapular notch. Just after the SSNB, ANB was performed and the entry site was the point 1.5 cm medial and 2cm inferior to posterolateral angle of acromion. With the linear probe, posterior circumflex artery was identified and the block was done at just above the artery.

This is same as the Group I, SSNB \& ANB, but ANB was performed with placebo(10mL normal saline).