Anatomy: Arm And Forearm Muscle Attachments

Front 1

Coracobrachialis (PA)

Back 1

Apex of the coracoid process of the scapula

Front 2

Brachioradialis (PA)

Back 2

Proximal 2/3 of the lateral supracondylar ridge of the humerus, and lateral intermuscular septum

Front 3

Anconeus (PA)

Back 3

Lateral epicondyle of the humerus, posterior surface

Front 4

Triceps Brachii, Long head (PA)

Back 4

Infraglenoid tubercle of the scapula

Front 5

Triceps Brachii, Lateral Head (PA)

Back 5

Lateral and posterior surfaces of the proximal 1/2 of the body of the humerus and lateral intermuscular septum

Front 6

Triceps Brachii, Medial head

Back 6

Distal 2/3 of the medial and posterior surfaces of the humerus below the radial groove and from the medial intermuscular septum

Front 7

Biceps Brachii, Long Head (PA)

Back 7

Supraglenoid tubercle of the scapula

Front 8

Biceps Brachii, Short head (PA)

Back 8

Apex of the coracoid process of the scapula

Front 9

Brachialis (PA)

Back 9

Distal 1/2 of the anterior surface of the humerus and both medial and lateral intermuscular septa

Front 10

Supinator (PA)

Back 10

Lateral epicondyle of the humerus, radial collateral ligament of the elbow joint, annular ligament of radius and supinator crest of the ulna

Front 11

Pronator Quadratus (PA)

Back 11

Medial side, anterior surface of distal 1/4 of ulna

Front 12

Pronator Teres (PA)

Back 12

Immediately above the medial epicondyle of the humerus, common flexor tendon, and deep antebrachial fascia, and the coronoid process of the ulna

Front 13

Extensor Carpi Ulnaris (PA)

Back 13

Common externso tendon from the lateral epicondyle of the humerus, by the aponeurosis from the posterior border of the ulna and deep antebrackial fascia

Front 14

Extensor carpi radialis brevis (PA)

Back 14

Common extensor tendon from the lateral epicondyle of the humerus, radial collateral ligament of elbow joint, and deep antebrachial fascia

Front 15

Extensor carpi radialis longus (PA)

Back 15

Distal 1/3 of the lateral supracondylar ridge of the humerus and lateral intermuscular septum

Front 16

Flexor Carpi Ulnaris, Humeral head (PA)

Back 16

Common flexor tendon from the medial epicondyle of the humerus

Front 17

Flexor Carpi Ulnaris, Ulnar Head (PA)

Back 17

By aponeurosis from the medial marin of the olecranon, proximal 2/3 of the posterior border of the ulna and from the deep antebrachial fascia

Front 18

Flexor Carpi Radialis (PA)

Back 18

Common flexor tendon from the medial epicondyle of the humerus, and deep antebrachial fascia

Front 19

Flexor Digitorum Profundus (PA)

Back 19

Anterior and medial surfaces of the proximal 3/4 of the ulna, interosseous membrane and deep antebrachial fascia

Front 20

Flexor digitorum superficialis, Humeral Head (PA)

Back 20

Common flexor tendon from the medial epicondyle of the humerus, ulnar collateral ligament of the elbow joint, and deep antebrachial fascia

Front 21

Flexor digitorum superficialis, ulnar head (PA)

Back 21

Medial side of the coronoid process

Front 22

Flexor digitorum superficialis, Radial Head (PA)

Back 22

Oblique line of the radius

Front 23

Extensor digitorum (PA)

Back 23

Common extensor tendon from the lateral epicondyle of the humerus, and deep antebrachial fascia

Front 24

Extensor digiti minimi (PA)

Back 24

Common extensor tendon from the lateral epicondyle of the humerus, and deep antebrachial fascia

Front 25

Extensor Indicis (PA)

Back 25

Posterior surface of the body of the ulna distal to the origin of the extensor pollicis longus, and interosseous membrane

Front 26

Palmaris Longus (PA)

Back 26

Common flexor tendon from the medial epicondyle of the humerus, and deep antebrachial fascia

Front 27

Coracobrachialis (DA)

Back 27

Medial surface of the middle of the shaft of the humerus, opposite the deltoid tuberosity

Front 28

Brachioradialis (DA)

Back 28

Lateral side of the base of the syloid process of the radius

Front 29

Anconeus (DA)

Back 29

Lateral side of the olecranon process and upper 1/4 of the posterior surface of the body of the ulna

Front 30

Triceps Brachii, Long head (DA)

Back 30

Posterior surface of the olecranon process of the ulna and antebrarchial fascia

Front 31

Triceps Brachii, Lateral Head (DA)

Back 31

Posterior surface of the olecranon process of the ulna and antebrarchial fascia

Front 32

Triceps Brachii, Medial head

Back 32

Posterior surface of the olecranon process of the ulna and antebrarchial fascia

Front 33

Biceps Brachii, Long Head (DA)

Back 33

Tuberosity of the radius and aponeurosis of the biceps brachii

Front 34

Biceps Brachii, Short head (DA)

Back 34

Tuberosity of the radius and aponeurosis of the biceps brachii

Front 35

Brachialis (DA)

Back 35

Tuberosity and coronoid process of the ulna

Front 36

Supinator (DA)

Back 36

Lateral surface of the upper 1/3 of the body of the radius, covering part of the anterior and posterior surfaces

Front 37

Pronator Quadratus (DA)

Back 37

Latero-anterior surface of the distal 1/4 of the radius

Front 38

Pronator Teres (DA)

Back 38

Half was down the radius on the lateral side, just distal to that attchment of the supinator

Front 39

Extensor Carpi Ulnaris (DA)

Back 39

Base of the 5th metacarpal bone, ulnar side

Front 40

Extensor carpi radialis brevis (DA)

Back 40

Dorsal surface of the base of the third metacarpal bone

Front 41

Extensor carpi radialis longus (DA)

Back 41

Dorsal surface of the base of second metacarpal bone, radial side

Front 42

Flexor Carpi Ulnaris, Humeral Head (DA)

Back 42

Pisiform bone and, by ligaments, to the hamate and 5th metacarpal bones

Front 43

Flexor Carpi Ulnaris, Ulnar Head (DA)

Back 43

Pisiform bone and, by ligaments, to the hamate and 5th metacarpal bones

Front 44

Flexor Carpi Radialis (DA)

Back 44

Base of the 2nd metacarpal bone and a slip to the base of the 3rd metacarpal bone.

Front 45

Flexor Digitorum Profundus (DA)

Back 45

By four tendons into the bases of the distal phalanges, anterior surface

Front 46

Flexor digitorum superficialis (DA)

Back 46

By four tendons into the sides of the middles phalanges of the second through fifth digits

Front 47

Extensor digitorum (DA)

Back 47

By four tendons, through a membranous expansion of 2nd through 5th digits and dividing over proximl phalanx into a medial and two lateral bands. Medial band inserts into the base of middle phalanx, lateral bands reunite over the middle phalanx and insert into the base of the distal phalanx

Front 48

Extensor digiti minimi (DA)

Back 48

Into the extensor expansion of the little finger with the extensor digitorum tendon

Front 49

Extensor Indicis (DA)

Back 49

Into the extensor expansion of the index finger with the extensor digitorum longus

Front 50

Palmaris Longus (DA)

Back 50

Flexor retinaculum and palmar aponeurosis