The Wrist and Hand

1
The Wrist and Hand

• Chapter 7

2
Overview

• Bony anatomy
• Bony articulations
• Movements
• Muscular anatomy

3
Bony Anatomy

• 29 total bones (27 not counting radius and ulna)
• 8 carpals
• 5 metacarpals
• 14 phalanges
• Radius
• Ulna

4
Bony Anatomy

• Carpals
• Navicular
• Lunate
• Triquetrum
• Pisiform
• Trapezium
• Trapezoid
• Capitate
• Hamate

5
Bony Anatomy

• Handy memory tricks
• Never Lie To a Preacher, The Truth Comes Home
• New Lovers Try Positions That They Cant Handle

6
Bony Anatomy

• Metacarpals
• 1-5
• Thumb is 1, pinky is 5
• Phalanges
• Proximal, intermediate, distal

7
Bony Anatomy

• Radius ulna
• Styloid processes

8
Bony Articulations

• Wrist
• Condyloid-type
• Flexion, extension, abduction, adduction

9
Bony Articulations

• Thumb
• Ginglymus
• Saddle joint of CMC
• Digits 2-5
• 3 condyloid joints
• Interphalangeal (IP) Proximal interphalangeal
  (PIP) Distal interphalangeal (DIP)

10
Movements

• Wrist
• Flexion
• Extension
• Abduction
• Adduction
• Fingers
• Flexion
• Extension
• Abduction
• Adduction

• Thumb
• Opposition
• Flexion
• Extension
• Adduction
• Abduction
• Circumduction

11
Movements
12
Muscular Anatomy

• Flexor group (anterior)
• Flexor carpi radialis
• Flexor carpi ulnaris
• Palmaris longus
• Flexor digitorum superficialis
• Flexor digitorum profundus
• Flexor pollicis longus

13
Muscular Anatomy

• Extensor group (posterior)
• Extensor carpi radialis
• Extensor carpi ulnaris
• Extensor digitorum
• Extensor pollicis longus brevis
• Abductor pollicis longus