Abstract
AbstractAnatomical variations at the suprascapular notch may limit the available space for the suprascapular nerve (SSN), and cause its entrapment in the tight osseoligamentous tunnel. The author encountered the presence of a trifid superior transverse scapular ligament (STSL) while operating on a patient with SSN entrapment. Surgical division of the three bands resulted in complete regression of symptoms.
Highlights
Suprascapular nerve (SSN) entrapment, rare, is a well-recognized clinical entity, which is caused by the compression of suprascapular nerve (SSN) in the suprascapular notch
This notch is bridged by a ligamentous band, which converts it into a foramen and permits passage of the suprascapular nerve
Polguj et al hypothesized that these morphologic variations of superior transverse scapular ligament (STSL) reduce the size of suprascapular foramen and can promote SSN entrapment.[3]
Summary
Suprascapular nerve (SSN) entrapment, rare, is a well-recognized clinical entity, which is caused by the compression of SSN in the suprascapular notch. This notch is bridged by a ligamentous band (superior transverse scapular ligament [STSL]), which converts it into a foramen and permits passage of the suprascapular nerve. A 25-year-old volleyball player presented with a 7-month history of dull aching pain on the posterolateral aspect of right dominant shoulder. He complained of weakness while attempting the overhead smash in volleyball. Supraspinatus muscle was retracted downward from the upper border of scapula This revealed the glistening white ligamentous bands of STSL overlying the suprascapular
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