Upper Arm, Elbow, and Forearm

• Osteology• X-ray• Muscles• CT/MRI

Elbow (AP)

Elbow (lat)

• Carrying angle – Angle between humerus and ulna (arm in

anatomic position)– 10-15° angle– Greater in females

Upper Arm, Elbow, and Forearm

• Osteology• X-ray• Muscles• CT/MRI

Extensors

Pronators and supinators

Ant. view

Post. view

Sagittal cut. Image 1

• 1, Radial head.• 2, Extensor carpi radialis

longus muscle.• 3, Triceps muscle (lateral

head).• 4, Cephalic vein.• 5, Brachoradialis muscle. • 6, Supinator muscle.• 7, Extensor carpi ulnaris

muscle.

sagittal cut. Image 3

• 1, Radial head. • 2, Supinator muscle. • 3, Anconeus muscle. • 4, Capitellum. • 5, Triceps muscle (lateral

head). • 6, Extensor carpi radialis

longus muscle.• 7, Biceps brachii muscle.• 8, Cephalic vein. • 9, Brachoradialis muscle.

sagittal cut. Image 5

• 1, Radial head. • 2, Anconeus muscle. • 3, Humerus. • 4, Triceps muscle (lateral

head). • 5, Biceps brachii muscle. • 6, Brachialis muscle. • 7, Biceps brachii tendon.

sagittal cut. Image 8

• 1, Olecranon. • 2, Triceps muscle (lateral

head). • 3, Humerus. • 4, Biceps brachii muscle. • 5, Brachialis muscle. • 6, Ulnar artery and vein. • 7, Pronator teres

muscle.

Coronal view

coronal cut. Image 3

• 1, Olecranon.• 2, Triceps muscle (lateral

head). • 3, Triceps tendon.• 4, Humerus. • 5, Flexor carpi ulnaris muscle. • 6, Flexor digitorum

profundus muscle. • 7, Extensor carpi ulnaris

muscle. • 8, Anconeus muscle.

coronal cut. Image 5

• 1, Ulna. • 2, Lateral epicondyle. • 3, Triceps muscle (lateral head). • 4, Medial epicondyle. • 5, Flexor digitorum superficialis

muscle. • 6, Flexor digitorum profundus

muscle. • 7, Supinator muscle. • 8, Extensor digitorum muscle. • 9, Extensor carpi ulnaris

muscle.

coronal cut. Image 6

• 1, Ulna. • 2, Radial head. • 3, Lateral epicondyle. • 4, Extensor carpi radialis longus

muscle. • 5, Olecranon fossa. • 6, Medial epicondyle. • 7, Triceps muscle (lateral head). • 8, Humerus. • 9, Triceps muscle (Medial head). • 10, Flexor digitorum superficialis

muscle. • 11, Supinator muscle. • 12, Extensor digitorum muscle.

coronal cut. Image 13

• 1, Supinator muscle. • 2, Extensor carpi radialis

longus and brevis muscle. • 3, Brachoradialis muscle. • 4, Brachialis muscle. • 5, Pronator teres muscle. • 6, Flexor carpi radialis

muscle.