Suprascapular Nerve Anatomy & Injury - Everything You Need To Know - Dr. Nabil Ebraheim

Educational video describing the suprascapular nerve.
The suprascapular nerve arises from the upper trunk of the brachial plexus.the suprascapular nerve passes under the transverse scapular ligament at the suprascapular notch. The transverse scapular artery runs above the transverse scapular ligament. the artery and nerve join and then pass through the Spino glenoid notch under the inferior scapular ligament. the suprascapular nerve gives branches to the supraspinatus muscle and branches to the infraspinatus muscle.
Nerve compression at the suprascapular notch affects both the supraspinatus and infraspinatus muscles causing decrease in abduction and loss of external rotation. Nerve compression at the Spino glenoid notch affects only the infraspinatus muscle causing loss of external rotation. Sponoglenoid notch compression can occur in volleyball players and is usually associated with cysts, ganglia, or SLAP tears.
Subacromial impingement & cuff pathology
Suprascapular nerve entrapment
MRI showing suprascapular nerve entrapment by ganglion cysts.
The infraspinatus muscle is the primary external rotator of the shoulder.
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