Suprascapular Nerve Anatomy

Courtesy: Prof Nabile Ebraheim
Professor of Orthopaedic Surgery
University of Toledo
Ohio
United States.

Suprascapular nerve

Origin: upper trunk of brachial plexus( C5, C6)

Course:

The Nerve passes under the transverse scapular ligament at suprascapular notch.

The transverse scapular artery runs above the ligament. Artery and nerve join and passes through spinoglenoid notch under inferior
scapular ligament

Innervation : supraspinatus and infraspinatus muscle

Clinical features: nerve compression at suprascapular notch affect both muscles and cause decrease in abduction and loss of
external rotation

Nerve compression at spinoglenoid affect infraspinatus and cause loss of external rotation

This is seen in volleyball players and associated with cyst ,ganglia and slap tears.