MuscleTables
MuscleTables
Table6-2
MUSCLE
PROXIMAL
ATTACHMENT
(ORIGIN)
DISTAL
ATTACHMENT
(INSERTION)
INNERVATION
MAIN ACTIONS
BLOOD SUPPLY
MUSCLE
GROUP
Extensor carpi
ulnaris
Lateral epicondyle of
humerus and
posterior border
of ulna
Dorsal base of 5th
metacarpal
Radial nerve
(posterior
interosseous)
Extends and adducts
hand at wrist
Posterior
interosseous
artery
Posterior
forearm
Extensor digiti
minimi
Lateral epicondyle of
humerus
Extensor expansion
of 5th digit
Radial nerve
(posterior
interosseous)
Extends 5th digit
Posterior
interosseous
artery
Posterior
forearm
Extensor digitorum
Lateral epicondyle of
humerus
Extensor expansions
of medial four
digits
Radial nerve
(posterior
interosseous)
Extends medial four
digits, assists in wrist
extension
Posterior
interosseous
artery
Posterior
forearm
Extensor indicis
Posterior surface of
ulna and
interosseous
membrane
Extensor expansion
of 2nd digit
Radial nerve
(posterior
interosseous)
Extends 2nd digit and
helps extend hand at
wrist
Posterior
interosseous
artery
Posterior
forearm
Extensor pollicis
brevis
Posterior surface of
radius and
interosseous
membrane
Dorsal base of
proximal
phalanx of
thumb
Radial nerve
(posterior
interosseous)
Extends proximal phalanx
of thumb at
carpometacarpal joint
Posterior
interosseous
artery
Posterior
forearm
Extensor pollicis
longus
Posterior surface of
middle third of
ulna,
interosseous
membrane
Dorsal base of distal
phalanx of
thumb
Radial nerve
(posterior
interosseous)
Extends distal phalanx
of thumb at
interphalangeal and
metacarpophalangeal
joints
Posterior
interosseous
artery
Posterior
forearm
Flexor carpi radialis
Medial epicondyle of
humerus
Base of 2nd
metacarpal
Median nerve
Flexes and abducts hand
at wrist
Radial artery
Anterior
forearm
Flexor carpi ulnaris
Humeral head:
medial
epicondyle of
humerus
Ulnar head:
olecranon and
posterior border
of ulna
Pisiform bone, hook
of hamate, base
of 5th
metacarpal
Ulnar nerve
Flexes and adducts hand
at wrist
Posterior ulnar
recurrent artery
Anterior
forearm
Flexor digiti minimi
brevis
Flexor retinaculum
and hook of
hamate bone
Medial side of base
of proximal
phalanx of little
finger
Ulnar nerve (deep
branch)
Flexes proximal phalanx
of little finger
Deep palmar branch
of ulnar artery
Hand
Flexor digitorum
profundus
Medial and anterior
surface of
proximal 3/4 of
ulna and
interosseous
membrane
Palmar base of
distal phalanges
of medial four
digits
Medial part:
ulnar
nerve
Lateral part:
median
nerve
Flexes distal phalanges
of medial four digits,
assists with ±exion of
hand at wrist
Anterior interosseous
artery, muscular
branches of
ulnar artery
Anterior
forearm
Flexor digitorum
superficialis
Humero-ulnar head:
medial
epicondyle of
humerus and
coronoid
process of ulna
Radial head:
superior half of
anterior radius
Bodies of middle
phalanges of
medial four
digits
Median nerve
Flexes middle and
proximal phalanges
of medial four digits,
±exes hand at wrist
Ulnar and radial
arteries
Anterior
forearm
Flexor pollicis brevis
Flexor retinaculum
and tubercle of
trapezium
Lateral side of base
of proximal
phalanx of
thumb
Median nerve
(recurrent
branch)
Flexes proximal phalanx
of thumb
Superficial palmar
branch of radial
artery
Hand
Flexor pollicis longus
Anterior surface of
radius and
interosseous
membrane
Palmar base of
distal phalanx of
thumb
Median nerve
(anterior
interosseous)
Flexes phalanges of
thumb
Anterior interosseous
artery
Anterior
forearm
Infraspinatus
Infraspinous fossa of
scapula and
deep fascia
Middle facet of
greater tubercle
of humerus
Suprascapular nerve
Lateral rotation of arm
(with teres minor)
Suprascapular artery
Shoulder
