Medial Cutaneous Nerve of the Forearm - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The medial cutaneous nerve of the forearm is a sensory branch of the medial cord of the brachial plexus. It supplies sensory innervation to the skin overlying the medial forearm. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Course The medial cutaneous nerve of the forearm is a sensory branch of the medial cord of the brachial plexus. This is derived from the anterior rami of spinal nerves C8-T1. After arising from the branchial plexus, the nerve travels down the medial aspect of the upper arm – accompanied by the ulnar nerve. It then pierces the deep fascia with the basilic vein to enter the subcutaneous plane. It then divides into anterior and posterior branches: Anterior branch: crosses anteriorly over the basilic vein. It the descends down the anteromedial aspect of the forearm, supplying cutaneous branches to the skin along its course. Posterior branch – follows the medial border of the basilic vein along the posteromedial aspect of the forearm, supplying cutaneous branches to the skin along its course. Adobe Stock, Licensed to TeachMeSeries Ltd Fig 1The course of the medial cutaneous nerve of the forearm Pro Feature - Dissection Atlas Prosection of the upper limb. The biceps brachii and coracobrachialis are visible, as well as the major peripheral nerves of the upper limb. Prosection of the upper limb. The biceps brachii and coracobrachialis are visible, as well as the major peripheral nerves of the upper limb. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Sensory Function The medial cutaneous nerve of the forearm supplies sensory innervation to the skin of the medial forearm. By TeachMeSeries Ltd (2026) Fig 2Cutaneous innervation of the medial cutaneous nerve of the forearm Frequent questions What is the medial cutaneous nerve of the forearm? The medial cutaneous nerve of the forearm is a sensory nerve originating from the medial cord of the brachial plexus. It provides sensory innervation to the skin on the medial aspect of the forearm. What is the course of the medial cutaneous nerve of the forearm? The nerve travels down the medial side of the upper arm alongside the ulnar nerve, then pierces the deep fascia with the basilic vein to enter the subcutaneous layer. It subsequently divides into anterior and posterior branches that supply the skin of the forearm. What areas does the medial cutaneous nerve of the forearm innervate? This nerve supplies sensory innervation specifically to the skin over the medial forearm. Its branches ensure that the entire medial surface of the forearm receives tactile sensation. What are the branches of the medial cutaneous nerve of the forearm? The medial cutaneous nerve of the forearm divides into anterior and posterior branches after it passes through the deep fascia. The anterior branch descends along the anteromedial aspect, while the posterior branch follows the posteromedial aspect of the forearm. What spinal nerves contribute to the medial cutaneous nerve of the forearm? The medial cutaneous nerve of the forearm is derived from the anterior rami of spinal nerves C8 and T1. These contributions from the brachial plexus are crucial for its sensory function in the forearm. Rate This Article