0 above the scapula (= a large, flat bone on each side of the back below the shoulder):
the suprascapular nerve
The suprascapular nerve contributes sensory fibres to the shoulder joint and provides motor innervation to the supraspinatus and infraspinatus muscles.
The suprascapular artery travels superiorly to the superior transverse ligament.
At the nerve trunk, branches of suprascapular nerves and the nerve to the subclavius also merge.
The suprascapular artery gives of the acromial branch, which pierces the trapezius muscle and supplies the skin over the acromion, anastomosing with the thoracoacromial artery.
The suprascapular artery branches off from the thyrocervical trunk, which in turn arises from the first part of the subclavian artery.
The ligament can become ossified and impinge the underlying suprascapular nerve.
Suprascapular notch labbeled at top center.
Suprascapular notch shown in red.
