Download Extensors

Upper Arm, Elbow, and Forearm
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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
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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
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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
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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
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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
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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.