1. Forearm & Wrist Anatomy

2. Wrist Skeletal Anatomy
8 carpal bones (Short)
Scaphoid
Lunate
Trapezoid
Pisiform
Triquetrium
Trapezium
Capitate
Hamate

4. Forearm Skeletal Anatomy
Radius
Ulna

5. Large Amounts of Movement
Roughly 19 joints are found in the wrist & forearm
Range of Motion
Wrist Flexion = 80°
Wrist Extension = 70°
Wrist Ulnar Deviation = 30°
Wrist Radial Deviation = 20°
Pronation = 90°
Supination = 90°

6. Muscles Wrist Flexors Flexor Carpi Radialis Flexor Carpi Ulnaris
Origin: Medial Epicondyle of Humerus
Insertion: 1st & 2nd Metacarpals
Flexor Carpi Ulnaris
Origin: Medial Epicondyle of Humerus & Olecranon Process of Ulna
Insertion: Pisiform, Hamate, 5th metacarpal

7. Muscles Wrist Extensors
Extensor Carpi Radialis Longus
Origin: Just above Lateral Epicondyle of humerus
Insertion: 2nd metacarpal
Extensor Carpi Radialis Brevis
Origin: Lateral Epicondyle of Humerus
Insertion: 3rd metacarpal
Extensor Carpi Ulnaris
Insertion: 5th Metacarpal

8. Muscles of the Forearm Pronator Teres Pronator Quadratus Supinator
Origin: Medial Epicondyle & Coronoid Process of the Ulna
Insertion: Mid 1/3 of the radius
Pronator Quadratus
Origin: Distal 1/3 of anterior ulna
Insertion: Distal 1/3 of anterior radius
Supinator
Origin: Lateral side of the elbow (bone & ligaments)
Insertion: Upper 1/3 of radius

9. Nerve Supply to the Wrist & Forearm
Radial Nerve, Ulnar Nerve, Median Nerve