Posterior compartment of the forearm Posterior compartment of the forearm The posterior compartment of the forearm (or extensor compartment) contains twelve muscles which are chiefly responsible for extension of the wrist and digits, and supination of the forearm. It is separated from the anterior compartment by the interosseous membrane between the radius and ulna. There are generally twelve muscles in the posterior compartment of the forearm, which can be further divided into a superficial, intermediate, and deep layer. Most of the muscles in the superficial and the intermediate layers share a common origin which is the outer part of the elbow, the lateral epicondyle of
Forearm (comics) exchange for a genetic matrix (none other than the Legacy Virus which Stryfe owned), Sinister would hand over the captive Cyclops and Jean Grey. These events begin the "X-Cutioner's Song" crossover. In the end, all of the MLF members are taken into custody- Forearm is defeated by Psylocke and Boomer working in tandem. Soon after, a tyrannical despot named Reignfire decides to restart the MLF. He breaks Forearm, Reaper, Wildside, and Tempo out of prison, and gives them their first mission: capture Henry Peter Gyrich. The MLF also picks up new members Locus and Moonstar. During the initial kidnap, Forearm