AXILLARY NERVE
Nerve Anatomy
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Overview
From WUSTL NeuromuscularAnatomy Origin: C5-C6 Brachial plexus: Posterior cord Innervation Motor: Deltoid; Teres minor Sensory: Skin over lateral shoulder Lesions: Weak arm abduction & external rotation Trauma Shoulder dislocation Anterior glenohumeral Traction Humerus fracture: Proximal Compression: Sleeping prone with arms over head Blunt trauma: Football; Wrestling; Ice hockey Penetrating injury: Injection; Bullet; Rotator cuff surgery Quadrilateral (quadrangular) space syndrome Brachial neuritis
Related Conditions
Shared genesExternal Resources
Data sourced from the Washington University Neuromuscular Disease Center. For clinical use, always refer to primary sources.