Brachioradialis

Brachioradialis

Brachioradialis (/ˌbreɪki.oʊrəˈdeɪliəs/) 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 above to the lateral supracondylar ridge of the humerus, and below to the base of the styloid process of the radius.

Etymology

The term "brachioradialis" originates from the Latin words brachium (meaning "arm") and radius (one of the bones of the forearm), indicating the muscle's attachment points.

Function

The brachioradialis is a powerful flexor of the forearm at the elbow joint. While it is not primarily responsible for either pronation or supination of the forearm, it can assist with these movements depending on the position of the forearm.

Clinical Significance

The brachioradialis reflex is a medically significant reflex used to test the integrity of the C5 and C6 spinal nerves and generally the functionality of the upper limb. The reflex is elicited by striking the brachioradialis tendon directly with a reflex hammer, and observing the forearm's response.

Related Terms

• Forearm
• Elbow joint
• Pronation
• Supination
• Brachioradialis reflex
• C5
• C6

External links

• Medical encyclopedia article on Brachioradialis
• Wikipedia's article - Brachioradialis

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