Anterior interosseous nerve
Anterior interosseous nerve
The Anterior interosseous nerve (pronunciation: an-teer-ee-or in-ter-os-ee-us nerv) is a branch of the median nerve that supplies the deep muscles in the anterior compartment of the forearm.
Etymology
The term "anterior interosseous nerve" is derived from Latin and Greek roots. "Anterior" comes from the Latin "ante" meaning "before", "interosseous" is derived from the Latin "inter" meaning "between" and "osseous" from the Greek "osteon" meaning "bone". Thus, the term refers to the nerve that runs between the bones at the front.
Anatomy
The anterior interosseous nerve originates from the median nerve near the elbow and travels down the forearm between the radius and ulna bones. It innervates the flexor pollicis longus, the radial half of the flexor digitorum profundus, and the pronator quadratus muscles.
Clinical significance
Damage to the anterior interosseous nerve can result in Anterior interosseous syndrome, a condition characterized by the inability to pinch the thumb and index finger together, and weakness in the affected hand.
Related terms
- Median nerve
- Radius
- Ulna
- Flexor pollicis longus
- Flexor digitorum profundus
- Pronator quadratus
- Anterior interosseous syndrome
External links
- Medical encyclopedia article on Anterior interosseous nerve
- Wikipedia's article - Anterior interosseous nerve
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