Inferior Transverse Scapular Ligament Viewed From A Posterior Side

Description

Posterior to the glenohumeral joint, the scapular spine and lateral border frame the spinoglenoid notch as the inferior transverse scapular ligament bridges from the lateral margin of the scapular spine toward the posterior glenoid rim. Just lateral and inferior sits the glenoid cavity with the humeral head aligned in the anatomic position, while the infraspinous fossa expands inferior to the spine. The ligament forms a short arch over the notch. Tight quarters. Compression at the spinoglenoid notch is a recognized cause of suprascapular neuropathy, often presenting with isolated infraspinatus weakness and atrophy because the suprascapular nerve has already supplied supraspinatus proximal to the suprascapular notch. This posterior perspective clarifies the relationship surgeons target when decompressing the nerve or addressing a paralabral ganglion or posterior superior labral pathology that can tether the nerve beneath the inferior transverse scapular ligament. Use this plate for upper limb anatomy teaching blocks, shoulder surgery atlases, and sports medicine lectures covering overhead athlete neuropathies and patterns of rotator cuff denervation. It also supports radiology correlation when explaining why a cyst at the posterior glenoid can reproduce EMG findings limited to infraspinatus. Anatomical accuracy verified by SciePro's Medical Advisory Board.