The musculocutaneous nerve arises from the brachial plexus:
Spinal roots C5, C6, and C7 → Brachial Plexus → Musculocutaneous Nerve
CAUSE OF INJURY
CLINICAL PRESENTATION OF INJURY
Inability to flex the elbow: this action is mediated by the biceps, innervated by this nerve.
Absents sensation on lateral aspect of the arm: this area is innervated by this nerve.
Page Updated: 04.15.2017