Anterior compartment of the forearm

The anterior compartment of the forearm (or flexor compartment)[1] contains the following muscles:[2]

superficialflexor carpi radialisextrinsicmedian
superficialpalmaris longusextrinsicmedian
superficialflexor carpi ulnarisextrinsiculnar
superficialpronator teresintrinsicmedian
superficial (or intermediate)flexor digitorum superficialisextrinsicmedian
deepflexor digitorum profundusextrinsiculnar + median (as anterior interosseous nerve)
deepflexor pollicis longusextrinsicmedian (as anterior interosseous nerve)
deeppronator quadratusintrinsicmedian (as anterior interosseous nerve)
Anterior compartment of the forearm
Cross-section through the middle of the forearm. (Anterior compartment is at top; posterior compartment is at bottom.)
Arteryulnar artery
Nervemedian nerve (anterior interosseous nerve), ulnar nerve (muscular branches of ulnar nerve)
Latincompartimentum antebrachii anterius
Anatomical terminology

The muscles are largely involved with flexion and pronation.[2] The superficial muscles have their origin on the common flexor tendon.[2] The ulnar nerve and artery are also contained within this compartment.[2] The flexor digitorum superficialis lies in between the other four muscles of the superficial group and the three muscles of the deep group. This is why it is also classified as the intermediate group.[2]

See also


  1. "Topographical Anatomy of the Upper Limb - Listed Alphabetically". University of Arkansas. Retrieved 2011-10-02.
  2. Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2010). "Upper Limb". Clinically Oriented Anatomy, 6th Edition. Philadelphia, PA: Lippincott Williams & Wilkins. pp. 746–749. ISBN 978-0-7817-7525-0.

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