|Anterior aspect of forearm|
forearm is divided into two compartments by an intervening interosseous
membrane placed between the ulna and radius. Also the division of the
muscles depends on the action of muscles and also their attachments. For
example, all the muscles in the anterior compartment perform flexion and
hence that compartment is also called flexor compartment. The muscles also
take origin from the medial epicondyle of humerus, which is also called the
common flexor origin. Most muscles in the posterior compartment are
extensors and the compartment is therefore called extensor compartment. The
muscles take origin from the lateral epicondyle of the humerus, which is
also called common extensor origin.
Presents transversely running Langerís lines
are three ventral flexor transverse lines at the distal end of the anterior
surface of forearm at its junction with the hand.
at the proximal end because of the subcutaneous border of ulna. Contains
loose fat and the following cutaneous structures
to the superficial musculature.
Muscles: Superficial layer
Muscles: Deep layer
These are the corresponding veins (which accompany the
artery in toto) or venae comitantes of the arteries enumerated above
1 Flexor carpi radialis 2 Palmaris longus 3 Flexor digitorum superficialis 4 Flexor carpi ulnaris 5 Radial artery 6 Brachioradialis
1 Radial artery 2 Ulnar artery 3 Flexor carpi radialis tendon 4 Biceps brachii tendon 5 Median nerve
1 Radial nerve/artery 2 Ulnar nerve/artery 3 Pronator quadratus 4 Brachialis 5 Median nerve