UL: Forearm Flashcards
Superficial layer of muscles of anterior compartment
Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronator teres

Origin and insertion of flexor carpi ulnaris
Humeral head - medial epicondyle
Ulnar head- olecranon

Origin and insertion of palmaris longus
Medial epicondyle
To palmar aponeurosis

Origin and insertion of flexor carpi radialis
medial epiconyle
base of 2,3 metacapal

Origin and insertion of pronator teres
Humeral head: medial epicondyle
Ulnar head: coronoic process
To midshaft of radius

Innervation of superficial muscles of forearm
Median- all except flexor carpi ulnaris (ulnar nerve)
Action of flexor carpi ulnaris
Wrist flexion
Adduction
Action of palmaris longsu
Flexion of wrist
Action of flexor carpi radialis
Flexion and abduction of wrist
Action of pronator teres
pronation
Intermediate muscles of forearm
Flexor digitorum superficialis

Origin and insertion of flexor digitorum superficialis
Humero-ulnar head- medial epicondyle and coronoid process
Radial head: oblique line of radius
To middle phalanges

Innervation of flexor digitorum superficialis
median nerve
Action of flexor digitorum superficialis
flexes PIP joint
Deep muscles of anterior compartment of forearm
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

Origin and insertion of flexor digitorum profundus
Ulna and interosseus membrane
Distal phalanges

Origin and insertion of flexor pollicis longus
Mid radius to distal phalanx of thumb

Origin and insertion of pronator quadratus
anterior ulna to anterior radius
Innervation of flexor digitorum profundus
Lateral half: anterior interosseus (median)
Medial half: ulnar
Innervation of flexor pollicis longus
Anterior interosseous (median)
Innervation of pronator teres
Anterior interosseous (median)
Action of flexor digitorum profundus
DIP flexion
Action of flexor pollicis longus
Flexes IP of thumb
Action of pronator quadratus
Pronation
Arteries of anterior compartment of forearm

Nerves of anterior forearm

Superficial muscles of posterior forearm
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digit minimi
Extensor carpi ulnaris
Anconeus

Origin and insertion extensor carpi radialis longus
Lateral supraepicondylar
To dorsal surface base of 2nd metacarpal

Origin and insertion of extensor carpi radialis brevis
Lateral epicondyle
To base of 2nd and 3rd metacarpal

Origin and insertion of extensor digitorum
lateral epicondyle to middle and distal phalanges

Origin and insertion of extensor digiti minimi
Lateral epicondyle
To extensor hood of little

Origin and insertion of extensor carpi ulnaris
Lateral epicondyle to tubercle base of 5th metacarpal

Origin and insertion of anconeus
Lateral epicondyle to olecranon

Innervation of extensor carpi radialis longus
Radial nerve
Innervation of extensor carpi radialis brevis
Deep branch of radial nerve
Innervation of extensor digitorum
Posterior interosseous nerve
Innervation of digiti minimi
Posterior interosseous nerve
Innervation of extensor carpi ulnaris
Posterior interosseous nerve
Innervation of anconeus
Radial nerve
Function of extensor carpi radialis longus and brevis
Extends and abducts wrist
Action of extensor digitorum
Extends fingers
Action of extensor digiti minimi
Extends little finger
Action of extensor carpi ulnaris
Extension and adduction
Action of anconeus
Abduction of ulna in pronation
Deep muscles of posterior compartment of forearm
Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indicis

Origin and insertion of supinator
Superficial part: lateral epicondyle
Deep: supinator crest of ulna
To lateral radius

Origin and insertion of abductor pollicis longus
Ulna and radius
Base of metacarpal 1

Origin and insertion of extensor pollicis brevis
Radius
To proximal phalanx

Origin and insertion of extensor pollicis longus
Ulna
Distal phalanx of thumb

Origin and insertion of extensor indicis
Ulna to extensor hood of finger

Innervation of deep posterior compartment of forearm
Posterior interosseous
Action of supinator
Supination
Action of extensor indicis
Extends index finger
Which structure seperates median nerve from ulnar artery
pronator teres

Where is annular ligament found
encircles head of radius, keeping radius in radial notch of proximal ulna

Nursmaide elbow
Pulled elbow
Subluxation of radial head due to partial tear of the annular ligament