Upper limb 3 Flashcards
Anterior Forearm/ Superficial
Muscles from Medial epicondyle of humerus
Pronator Teres
Flexor Carpi Radialis
Palmaris Longus
Flexor Carpi Ulnaris
Pronator Teres
O: medial epicondyle + coronoid process of ulna
I: Lateral radius
A: Pronation, Flexion
I: Median Nerve (C6,C7)
Flexor Carpi Radialis
O: medial epicondyle
I: Base of 2nd metacarpal
A: Flex + Abduct hand at wrist
I: Median Nerve (C6,C7)
Palmaris Longus
O: Medial epicondyle of humerus
I: flexor retinaculum + palmar aponeurosis
A: weak flexor
I: Median nerve (C7,C8)
Flexor Carpi Ulnaris
O: Humeral head: medial epicondyle of humerus
Ulnar head: Olecranon and posterior border of ulna
I: Pisiform & Hamate, 5th metacarpal
A: Flexion and Adduction of hand
I: Ulnar nerve (C7,C8)
Anterior muscles of the middle layer of the forearm
Flexor digitorum superficialis
Flexor digitorum superficialis
O: Humeral head: Medial epicondyle of humerus
Radial head: superior border of radius
I: bodies of middle phalanges
A: Flexes middle phalanges + Flex proximal phalanges
I: median nerve (C7,C8,T1)
Anterior muscles of the deep layer of the forearm
Flexor digitorum profundus
Flexor Pollicis Longus
Pronator Quadratus
Flexor digitorum profundus
O: medial surface of ulna + interosseous membrane
I: Distal phalanges
A: Flexes distal phalanges
I: Medial: ulnar nerve Lateral: median nerve
Difference between flexor digitorum superficialis and Profundis
superficialis - flex middle phalanges
profundus - flex distal phalanges
Flexor Pollicis Longus
O: Anterior surface of radius
I: Distal phalange of thumb
A: Flexion of thumb
I: Median nerve + interosseous nerve
Pronator Quadratus
O: anterior surface of ulna
I: anterior surface of radius
A: Pronation
I: Median nerve + interosseous nerve
Carpal Tunnel Syndrome
Flexor retinaculum - transverse carpal ligament
Overuse of tendons in the tunnel lead to compression of median nerve
Flexor retinaculum function
Prevents bowstringing of tendons during flexion
Tendon that doesn’t travel under flexor retinaculum
Palmaris Longus
