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Suprascapular nerve block and Axillary nerve block

Indications:

- The suprascapular nerve is a mixed nerve that comes from the superior branch of the brachial plexus

- It is a combination of C5 and C6 spinal nerves

- It provides motor innervation for the supraspinatus, infraspinatus, and part of teres minor musculature

- It is sensory also to the acromioclavicular joint

- It provides approximately 70% of the sensation in the posterior capsule of the glenohumeral joint


Targets:

- The primary landmark for blockade is between the suprascapular notch and the supraglenoid notch along the floor of the suprascapular spine space (though be aware up to 8% of cadavers do not clearly have this notch)

- The suprascapular artery and vein usually run above the notch. But at times the artery can run with the nerve within the notch


Technique:

- Patient can be sitting or prone

- US scanning with a linear probe (7-14MHz)

- Probe placed in coronal plane over the supraclavicular fossa

- Needle is entered from medial aspect towards lateral


Contraindications:


Risks:

- Pneumothorax is possible (1%)











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