Suprascapular Nerve Block
This block is useful for painful conditions arising from the shoulder (most commonly arthritis and bursitis).
The suprascapular nerve is the major sensory nerve of the shoulder joint. It arises from the brachial plexus (C4–C6) and passes over the upper border of the scapula in the suprascapular notch to enter the suprascapular fossa.
The nerve is blocked at the suprascapular notch, which is located at the junction of the lateral and middle thirds of the superior scapular border (Figure 47–11). Correct placement of the needle is determined by paresthesia, ultrasound, or the use of a nerve stimulator.
Pneumothorax is possible if the needle is advanced too far anteriorly. Paralysis of the supraspinatus and infraspinatus muscles will result in impaired shoul-der abduction.
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