Flexor Compartment Or Anterior Compartment of Forearm (Muscles)

SUPERFICIAL MUSCLES

(1) Flexor Carpi Radiallis
image

Origin

Medial epicondyle of humerus

Insertion

Anterior aspect of base of second metacarpal, base of third metacarpal and trapezial tuberosity

Artery Supply

Radial Artery

Nerve Supply

Median Nerve

Movement

Flexion and Abduction of hand at wrist

Associated Pathology

Flexor Carpi Radiallis Tendonitis

(2) Palmaris longus

image

Origin

Medial epicondyle of humerus

Insertion

Central part of flexor retinaculum and lower part of palmar aponeurosis

Artery Supply

Ulnar Artery

Nerve Supply

Median Nerve

Movement

Flexion of Wrist

Associated Pathology

Palmaris Longus Tendon Rupture

It is also used in tendon graft

(3) Flexor Digitorum Superficialis

image

Origin

Muscle has two heads – the humeroulnar and radial

Medial epicondyle of humerus and anterior portion of radius

Insertion

It inserts into the anterior margin of bases of the middle phalanges of the medial four digits

Artery Supply

Ulnar Artery

Nerve Supply

Median Nerve

Movement

Fingers Flexion mainly of Proximal Interphalangeal joint

Associated Pathology

Flexor Digitorum Superficialis tendon rupture occurs in rugby players

(4) Flexor Carpi Ulnaris

image

Origin

Humeral head at Medial epicondyle of humerus

Ulnar head at Medial aspect of olecranon process of ulna

Insertion

Pisiform, Hook of Hamate and base of 5th metacarpal

Artery Supply

Ulnar Artery

Nerve Supply

Ulnar Nerve

Movement

Flexion and Abduction of hand at wrist

Associated Pathology

Cubital tunnel syndrome

(5) Pronator Teres

image

Origin

Humeral head at medial supracondylar ridge of humerus

Ulnar head at coronoid process of ulna

Insertion

Middle of lateral surface of body of radius

Artery Supply

Ulnar And Radial Artery

Nerve Supply

Median Nerve

Movement

Pronation of forearm and flexion of elbow

Associated Pathology

Pronator Teres Syndrome

Deep Muscles

(1) Flexor Digitorum Profundus

image

Origin

upper 3/4 of the anterior and medial surfaces of the body of the ulna, interosseous membrane and deep fascia of the forearm

Insertion

Base of Distal Phalanges of fingers

Artery Supply

Anterior interosseous Artery

Nerve Supply

Anterior Interosseus Nerve and Ulnar Nerve

Movement

Flexor of Wrist, Metacarpophalangeal joint and Interphalangeal joint

Associated Pathology

Jersey Finger
Linburg – Comstock Syndrome

(2) Flexor Pollicis Longus

image

Origin

Middle 2/4th of the anterior surface of the radius and the interosseous membrane

Insertion

Base of Distal Phalanx of Thumb

Artery Supply

Anterior Interosseous Artey

Nerve Supply

Anterior Interosseous Nerve

Movement

Thumb Flexion

Associated Pathology

Linburg-Comstock Syndrome
FPL tendon rupture

(3) Pronator Quadratus

image

Origin

Medial and Anterior Surface of Ulna

Insertion

Lateral and Anterior Surface of Radius

Artery Supply

Anterior Interosseous Artey

Nerve Supply

Anterior Interosseous Nerve

Movement

Pronation of forearm

Associated Pathology

Overuse injury, Overactive and Short Pronator Quadratus

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Written by priyeshbanerjeept

Physiotherapist, Certified MFR therapist on a mission to provide one stop search destination for various diseases its symptoms,causes,diagnosis,treatment, physiotherapy management,rehabilitation with practical examples for aspiring physiotherapists,medical professionals and general public.

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