Nerve
Suprascapular nerve
Supraspinatus and infraspinatus
High-yield
Passes under the superior transverse scapular ligament; entrapment weakens abduction initiation and lateral rotation.
Overview
A branch of the upper trunk that passes through the suprascapular notch to supply two rotator cuff muscles.
Reference facts
- Roots
C5, C6 (upper trunk)
- Course
Runs through the suprascapular notch (beneath the transverse scapular ligament), then around the spinoglenoid notch to the infraspinous fossa
- Motor
Supraspinatus and infraspinatus
- Sensory
Glenohumeral and acromioclavicular joints (articular)