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The superior transverse ligament (transverse or suprascapular ligament [1]) converts the suprascapular notch into a foramen or opening. It is a thin and flat fascicle , narrower at the middle than at the extremities, attached by one end to the base of the coracoid process and by the other to the medial end of the scapular notch.
The suprascapular notch (or scapular notch) is a notch in the superior border of the scapula, ... Type VI: Notch is a foramen as the ligament is completely ossified. [4]
Triangular space Suprascapular and axillary nerves of right side, seen from behind. The axillary spaces are labeled in green. Triangular space is the medial space.
The suprascapular nerve is a mixed (sensory and motor) nerve that branches from the upper trunk of the brachial plexus. It is derived from the ventral rami of cervical nerves C5-C6. It provides motor innervation to the supraspinatus muscle , and the infraspinatus muscle .
The suprascapular canal [2] is an osteofibrous canal situated in the spinoglenoid fossa conveying suprascapular nerve and vessels. Its passage covered by the supraspinatus fascia and connects between its entrance formed by the suprascapular notch (enclosed by the suprascapular ligament) and its exit formed by spinoglenoid notch (enclosed by the spinoglenoid ligament).
The posterior branch of the suprascapular artery supplies the supraspinatous muscle. Dorsal scapular artery also gives off a collateral branch and anastomoses with the suprascapular artery. [1] Suprascapular nerve from the brachial plexus passes through the suprascapular notch as it approaches the fossa to supply the supraspinatus muscle ...
The quadrangular space is a clinically important anatomic space in the arm as it provides the anterior regions of the axilla a passageway to the posterior regions. In the quadrangular space, the axillary nerve and the posterior humeral circumflex artery can be compressed or damaged due to space-occupying lesions or disruption in the anatomy due to trauma.
It passes over the superior transverse scapular ligament in most of the cases while below it through the suprascapular notch in some cases. [2] [3] [4] The artery then enters the supraspinous fossa of the scapula. It travels close to the bone, running through the suprascapular canal underneath the supraspinatus muscle, [4] to which it supplies ...