Pronator teres (left) (Musculus pronator teres)
Educational content only — not medical advice.
Anatomy
A fusiform superficial anterior-compartment forearm muscle with humeral and ulnar heads that straddle the ulnar artery; its lower edge forms the medial boundary of the cubital fossa.
Origin & insertion
Humeral head from the medial epicondyle and septum; ulnar head from the coronoid process of the ulna.
Action
Pronates the forearm and weakly assists elbow flexion.
Innervation
Median nerve (C6–C7).
Clinical notes
Pronator teres syndrome compresses the median nerve between its heads causing weakness without numbness — distinguished from carpal tunnel by the long-flexor signs.
Related structures
Educational references
FAQ
What is the role of the Pronator teres (left)?
A fusiform superficial anterior-compartment forearm muscle with humeral and ulnar heads that straddle the ulnar artery; its lower edge forms the medial boundary of the cubital fossa.
Why is the Pronator teres (left) clinically important?
Pronator teres syndrome compresses the median nerve between its heads causing weakness without numbness — distinguished from carpal tunnel by the long-flexor signs.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details