Search results
Results from the WOW.Com Content Network
The great scapular notch (or spinoglenoid notch) is a notch which serves to connect the supraspinous fossa and infraspinous fossa. It lies immediately medial to the attachment of the acromion to the lateral angle of the scapular spine. The suprascapular artery and suprascapular nerve pass around the great scapular notch anteroposteriorly.
Differential considerations include similar rotator cuff denervation syndromes such as Parsonage–Turner syndrome, and compression of the suprascapular nerve at the spinoglenoid notch in which the infraspinatus, and to a lesser degree supraspinatus is involved.
The differential focuses on distinguishing it from similar entities such as quadrilateral space syndrome, which involves the teres minor and variably the deltoid, and suprascapular nerve impingement at the spinoglenoid notch, which predominantly involves the infraspinatus. [8]
Shoulder impingement syndrome is a syndrome involving tendonitis (inflammation of tendons) of the rotator cuff muscles as they pass through the subacromial space, the passage beneath the acromion. It is particularly associated with tendonitis of the supraspinatus muscle . [ 1 ]
It then runs along the superior border of the scapula through the suprascapular canal, [1] in which it enters via the suprascapular notch inferior to the superior transverse scapular ligament and enters the supraspinous fossa. [2]
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).
Type II: Notch is a blunted V-shape occupying the middle third of the superior border. Type III: Notch is U-shaped with nearly parallel margins. Type IV: Notch is V-shaped and very small. A shallow groove is frequently formed for the suprascapular nerve adjacent to the notch. Type V: Notch is minimal and U-shaped with a partially ossified ligament.
The inferior transverse ligament (spinoglenoid ligament [1]) is a weak membranous band, situated behind the neck of the scapula and stretching from the lateral border of the spine to the margin of the glenoid cavity. It forms an arch under which the transverse scapular vessels and suprascapular nerve enter the infraspinatous fossa.