GSSE Questions

At the level of supinator, the radial nerve separates into its sensory branch (superficial radial nerve) and motor branch (PIN). The superficial radial nerve then travels over the supinator, pronator teres tendon and flexor digitorum superficialis under the cover of brachioradials to enter the posterior compartment. The PIN passes between supinators two layers to appear in the extensor compartment. It then passes downwards over the abductor policis longus origin to reach the interosseous membrane.