Anterior compartment of the forearm

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Anterior compartment of the forearm

Cross-section through the middle of the forearm. (Anterior compartment is at top; posterior compartment is at bottom.)
Latin	compartimentum antebrachii anterius
Artery	ulnar artery
Nerve	median nerve (anterior interosseous nerve), ulnar nerve (muscular branches of ulnar nerve)

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

Level	Muscle	Extrinsic/Intrinsic	Nerve
superficial	flexor carpi radialis	extrinsic	median
superficial	palmaris longus	extrinsic	median
superficial	flexor carpi ulnaris	extrinsic	ulnar
superficial	pronator teres	intrinsic	median
superficial (or intermediate)	flexor digitorum superficialis	extrinsic	median
deep	flexor digitorum profundus	extrinsic	ulnar + median (as anterior interosseous nerve)
deep	flexor pollicis longus	extrinsic	median (as anterior interosseous nerve)
deep	pronator quadratus	intrinsic	median (as anterior interosseous nerve)

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].

Contents

1 See also
2 References
3 External links
4 Additional images

References

^ "Topographical Anatomy of the Upper Limb - Listed Alphabetically". University of Arkansas. http://anatomy.uams.edu/AnatomyHTML/topogr_upperlimb.html. Retrieved 2011-10-02.
^ ^a ^b ^c ^d 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.

External links

Additional images

Transverse section across distal ends of radius and ulna.
Transverse section across the wrist and digits.

List of muscles of upper limbs (TA A04.6, GA 4.432)

Shoulder

deltoid · rotator cuff (supraspinatus, infraspinatus, teres minor, subscapularis) · teres major

fascia: Deltoid fascia · Supraspinous fascia · Infraspinous fascia

Arm
(compartments)

Anterior	coracobrachialis · biceps brachii · brachialis

Posterior	triceps brachii · anconeus · Articularis cubiti

Fascia	Axillary sheath · Axillary fascia · Brachial fascia · intermuscular septa (Lateral, Medial)

Other	spaces (Quadrangular space, Triangular space, Triangular interval)

Forearm

Anterior	superficial: pronator teres · palmaris longus · flexor carpi radialis · flexor carpi ulnaris · flexor digitorum superficialis deep: pronator quadratus · flexor digitorum profundus · flexor pollicis longus

Posterior	superficial: mobile wad (brachioradialis, extensor carpi radialis longus and brevis) · extensor digitorum · extensor digiti minimi · extensor carpi ulnaris deep: supinator · anatomical snuff box (abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus) · extensor indicis

Fascia	Bicipital aponeurosis · common tendons (Extensor, Flexor) · Antebrachial fascia

Other	Cubital tunnel

Hand

Lateral volar	thenar (opponens pollicis, flexor pollicis brevis, abductor pollicis brevis) · adductor pollicis

Medial volar	hypothenar (opponens digiti minimi, flexor digiti minimi brevis, abductor digiti minimi) · palmaris brevis

Intermediate	lumbrical · interossei (dorsal, palmar)

Fascia	posterior: Extensor retinaculum · Extensor expansion anterior: Flexor retinaculum · Palmar aponeurosis

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/devp/hist

noco(m, s, c)/cong(d)/tumr, sysi/epon, injr

proc, drug (M1A/3)

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