Brachioradialis

Brachioradialis muscle
Anterior view of muscles of the left forearm with brachioradialis shown in blue
Cross-section through the middle of the forearm. Brachioradialis labeled at center left, sixth from the top.
Details
Origin	Lateral supracondylar ridge of the humerus
Insertion	Distal radius (radial styloid process)
Artery	Radial recurrent artery
Nerve	Radial nerve
Actions	Flexion of elbow and supination
Identifiers
Latin	musculus brachioradialis
Dorlands /Elsevier	m_22/12548506
TA	A04.6.02.039
FMA	38485
Anatomical terms of muscle []

The brachioradialis (Venke's muscle) is a muscle of the forearm that flexes the forearm at the elbow. It is also capable of both pronation and supination, depending on the position of the forearm. It is attached to the distal styloid process of the radius by way of the brachioradialis tendon, and to the lateral supracondylar ridge of the humerus.

The brachioradialis is a superficial, fusiform muscle on the lateral side of the forearm that attaches proximally on the lateral supracondylar ridge of the humerus and distally on the radius, close to its styloid process. Near the elbow, it forms the lateral limit of the cubital fossa, or elbow pit.

Despite the bulk of the muscle body being visible from the anterior aspect of the forearm, the brachioradialis is a posterior compartment muscle and consequently is innervated by the radial nerve. Of the muscles that receive innervation from the radial nerve, it is one of only four that receive input directly from the radial nerve. The other three are the triceps, anconeus, and extensor carpi radialis longus. (All other posterior compartment muscles that receive radial innervation are supplied by the deep branch of the radial nerve.)