1. Chapter 12 Wrist Joint

2. Joint Structure Radiocarpal joint Midcarpal joint
Radiocarpal joint – condyloid; biaxial; flex/ext & rad/uln deviation; combination is circumduction
- at distal radius is radioulnar disk; scaphoid, lunate, & triquetrum
Midcarpal joint – intercarpal; plane joint; nonaxial; gliding
CMC joint – connect wrist to hand

3. Joint Motions Flexion, extension, and hyperextension
Radial and ulnar deviation
Flexion 0-90; Extension 0-70; hyperextension
Radial deviation 0-25; Ulnar deivation 0-35

4. Bones and Landmarks
Radius
Styloid process
Ulna

5. Bones and Landmarks Carpal bones Humerus Hook of hamate
Medial epicondyle
Lateral epicondyle
Lateral supracondylar ridge
Lateral Supracondylar Ridge - ECRL

6. Ligaments and Other Structures
Radiocarpal joint
Radial collateral ligament
Ulnar collateral ligament
Palmar radiocarpal ligament
Dorsal radiocarpal ligament
Articular disk
Palmar fascia
Palmar Fascia - aponeurosis

7. Muscles of the Wrist Anterior Posterior Flexor carpi ulnaris
Flexor carpi radialis
Palmaris longus
Posterior
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris

8. Wrist Joint Anatomical relationships Summary of muscle action
Summary of muscle innervation
Summary of Muscle Action – Table 12.2 page 168
Summary of muscle innervation – Table 12.3 page 168