axillary neuropraxia secondary to shoulder dislocation ( RID7240 )
Acute denervation change (possibly early subacute) of the axillary nerve. There is a GAGL lesion present and the humeral head probably went straight into the quadrilateral space causing a stretch neuropraxia of the axillary nerve. Changes are in the deltoid and teres minor but spared the supraspinatus and infraspinatus. Non contiguous muscle changes should make one think of a nerve issue! Anterior inferior labrum was intact, with an avulsion of the axillary pouch inferior glenohumeral ligament.

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