30+ Anatomy Of Wrist And Forearm. The anatomy of the forearm in one sense is as straightforward as the arm in that there are only two compartments, flexor and extensor, separated the anatomy of the wrist and methods to remember tendon names are described in a later section. The forearm (lower arm or antebrachium) has an anterior compartment, which consists of the flexor group of muscles and is innervated by the ulnar and median nerve, and a posterior compartment the forearm, the wrist, and the hand are perfused by the radial and ulnar artery and their branches.
The forearm is the region of the upper limb between the elbow and the wrist.
While the function and structure of the wrist is once of the most complex in the body, the purpose of our it is a complex formation of joints that connects to the ulna and radius of the forearm as well as the five metacarpal bones of the phalanges. The term forearm is used in anatomy to distinguish it from the arm. For the discussion in this chapter, anatomy will focus on the compartments of the hand and forearm and their relevance to surgical approaches (table 1). The wrist extensors are a group of nine muscles on the back of the forearm that act on the wrist and fingers.