where does the radial nerve insert
The radial nerve originates as a terminal branch of the posterior cord of the brachial plexus. It goes through the arm, first in the posterior compartment of the arm, and later in the anterior compartment of the arm, and continues in the posterior compartment of the forearm.t is commonly believed that the radial nerve also provided motor innervation to the long head of the triceps. However, a study conducted in 2004 determined that, in 20 cadaveric specimens and 15 surgical dissections on participants, the long head was innervated by a branch of the axillary nerve in all cases.
Radial-tunnel syndrome refers to compression or entrapment of the radial nerve at the outside of the elbow. It is frequently caused by repetitive wrist and finger extension or turning of the forearm. Symptoms can occur at the elbow where the nerve is compressed or near the base of thumb, or anywhere in between.