Pronator teres muscle
|Pronator teres muscle|
|Front of the left forearm. Superficial muscles. (Pronator teres labeled at center.)|
|Latin||musculus pronator teres|
|Gray's||subject #125 446|
|Origin:||humeral head: medial epicondyle of humerus (common flexor tendon) |
ulnar head: coronoid process of ulna
|Artery:||ulnar artery and radial artery|
|Action:||pronation of forearm, flexes elbow|
The pronator teres has two heads--humeral and ulnar.
The ulnar head is a thin fasciculus, which arises from the medial side of the coronoid process of the ulna, and joins the preceding at an acute angle.
The muscle passes obliquely across the forearm, and ends in a flat tendon, which is inserted into a rough impression at the middle of the lateral surface of the body of the radius, just below the insertion of the supinator.
The pronator teres is innervated by the median nerve.
"Pronator teres syndrome" is one common cause of wrist pain.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.