This 2000 JBJS Current Concepts Review by Cummins, Messer, and Nuber synthesizes more than 100 articles on suprascapular nerve entrapment. It covers anatomy, pathophysiology, clinical evaluation, diagnostic workup, and treatment across all etiologies. The central question it addresses: how does entrapment location determine presentation, diagnosis, and operative approach?
A patient with posterior shoulder pain, infraspinatus wasting, and preserved supraspinatus function on exam: this pattern points to the spinoglenoid notch, not the suprascapular notch. The distinction matters operationally — releasing only the superior transverse scapular ligament in a distal lesion will likely fail.
When you order the MRI, look for a ganglion cyst at the spinoglenoid notch and an associated posterior labral tear. These findings almost always coexist, and treating the cyst without addressing the labral tear risks recurrence.
For ganglion cysts, skip prolonged nonoperative management. This review found a 71% failure rate. Proceed to operative treatment, and favor arthroscopy so you can identify and debride the labral tear at the same time.
One number worth retaining for boards: the suprascapular nerve passes beneath the superior transverse scapular ligament while the vessels pass over it. Get this anatomy backward intraoperatively and you risk the nerve.
This 2000 JBJS Current Concepts Review by Cummins, Messer, and Nuber synthesizes more than 100 articles on suprascapular nerve entrapment. It covers anatomy, pathophysiology, clinical evaluation, diagnostic workup, and treatment across all etiologies. The central question it addresses: how does entrapment location determine presentation, diagnosis, and operative approach?
A patient with posterior shoulder pain, infraspinatus wasting, and preserved supraspinatus function on exam: this pattern points to the spinoglenoid notch, not the suprascapular notch. The distinction matters operationally — releasing only the superior transverse scapular ligament in a distal lesion will likely fail.
When you order the MRI, look for a ganglion cyst at the spinoglenoid notch and an associated posterior labral tear. These findings almost always coexist, and treating the cyst without addressing the labral tear risks recurrence.
For ganglion cysts, skip prolonged nonoperative management. This review found a 71% failure rate. Proceed to operative treatment, and favor arthroscopy so you can identify and debride the labral tear at the same time.
One number worth retaining for boards: the suprascapular nerve passes beneath the superior transverse scapular ligament while the vessels pass over it. Get this anatomy backward intraoperatively and you risk the nerve.