Inferior subscapular nerve

Inferior subscapular nerve is a branch of the posterior cord of brachial plexus. It has a relatively longer course compared to the superior subscapular nerve and descends along the posterior axillary wall. It ends up innervating not just the lower part of subscapularis muscle, but also providing neuronal branches to the teres major muscle.

The long course of the inferior subscapularis nerve places it at risk of injury during procedures such as shoulder arthroplasty, where-in the inferior subscapular nerve could undergo traction as well as torsion, in an attempt to expose the glenoid.