The superior transverse scapular ligament bridges the scapular notch, converting it into a foramen through which the suprascapular nerve passes while the suprascapular artery travels above the ligament. This creates the critical anatomical relationship in suprascapular nerve entrapment.
Converts the scapular notch into a fibro-osseous tunnel for the suprascapular nerve, separates the nerve from the suprascapular artery, and determines the available space for the nerve within the notch.
Suprascapular nerve entrapment at the transverse scapular ligament produces supraspinatus and infraspinatus weakness and posterior shoulder pain — distinguished from spinoglenoid notch entrapment (infraspinatus only). Surgical ligament release decompresses the nerve. Ossification of the transverse scapular ligament (suprascapular notch stenosis) is identifiable on CT.
Suprascapular nerve compression at the transverse scapular ligament producing supraspinatus and infraspinatus denervation with posterior shoulder pain and weakness, managed by arthroscopic or open ligament release.
Partial or complete ossification of the superior transverse scapular ligament narrowing the suprascapular notch, identified on CT as a cause of suprascapular neuropathy requiring targeted surgical decompression.
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