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Title:

The Wrist and Hand Joints

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Title: The Shoulder Girdle Author: Robin Lund Last modified by: Robin Lund Created Date: 8/4/2008 3:38:03 PM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Slides: 41
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Learn more at: http://www.uni.edu
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Tags: carpal | hand | joints | tunnel | wrist

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Title: The Wrist and Hand Joints


1
The Wrist and Hand Joints
  • Anatomy and Kinesiology
  • 420024

2
The Wrist and Hand Joints
  • Many sports require precise functioning of wrist
    hand
  • Archery, bowling, golf, baseball, tennis, etc.
    require combined use of wrist hand joints
  • Very complex
  • 29 bones
  • 25 joints
  • 33 muscles

3
Objectives
  • Bones, bony landmarks and joints
  • Muscles
  • Movements

4
Bones
  • 29 bones, including radius ulna
  • Carpals (8)
  • Two rows of 4 bones
  • Metacarpals (5)
  • Numbered 1-5
  • Phalanges (14)
  • Three for each finger
  • Two for the thumb
  • Thumb has a sesamoid bone in its flexor tendon
  • Other sesamoids may occur in joints of fingers

5
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6
Bones
  • Carpal bones form a three-sided arch
  • Concave on palmar side
  • creates the carpal tunnel
  • Frequently a source of problems known as carpal
    tunnel syndrome

7
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8
Wrist and Hand Joints
  • Radiocarpal joint
  • Biaxial ball and socket
  • Intercarpal joints
  • Gliding/nonaxial
  • Carpometacarpal joints
  • Fingers Gliding/nonaxial
  • Thumb Biaxial saddle

9
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10
Wrist and Hand Joints
  • Metacarpophalangeal joints
  • Fingers Biaxial ball and socket
  • Thumb Uniaxial hinge
  • Proximal interphalangeal joints
  • Fingers Uniaxial hinge
  • Distal interphalangeal joints
  • Fingers Uniaxial hinge
  • Interphalangeal joint
  • Thumb Uniaxial hinge

11
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12
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13
Objectives
  • Bones, bony landmarks and joint
  • Muscles
  • Movements

14
Wrist and Hand Muscles
  • Extrinsic muscles (15)
  • All multiarticular
  • Elbow/wrist/hand (1)
  • Elbow/wrist (6)
  • Wrist/hand (8)
  • Intrinsic muscles (18)

15
Extrinsic Wrist and Hand Muscles (15)
  • Elbow, Wrist and Hand (3)
  • Elbow flexion, wrist flexion, finger flexion (1)
  • Elbow extension, wrist extension, finger
    extension (2)
  • Fingers 2, 3, 4, 5
  • Pinky
  • Elbow and Wrist (6)
  • Elbow flexion, wrist flexion (3)
  • 1 wrist abductor
  • 1 wrist adductor
  • 1 flexor only
  • Elbow flexion, wrist extension (2)
  • 1 wrist abductor
  • 1 wrist adductor
  • Elbow extension, wrist extension (1)
  • Wrist adductor
  • Wrist and Hand (6)
  • Wrist flexion, finger flexion (1)
  • Wrist flexion, thumb flexion (1)
  • Wrist abductor

16
Attachments
  • Elbow, Wrist and Hand (3)
  • Elbow flexion, wrist flexion, finger flexion (1)
  • Elbow extension, wrist extension, finger
    extension (2)
  • Fingers 2, 3, 4, 5
  • Pinky

17
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18
Attachments
  • Elbow, Wrist and Hand (3)
  • Elbow flexion, wrist flexion, finger flexion (1)
  • Elbow extension, wrist extension, finger
    extension (2)
  • Fingers 2, 3, 4, 5
  • Pinky

19
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20
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21
Attachments
  • Elbow and Wrist (6)
  • Elbow flexion, wrist flexion (3)
  • 1 wrist abductor
  • 1 wrist adductor
  • 1 flexor only
  • Elbow flexion, wrist extension (2)
  • 1 wrist abductor
  • 1 wrist adductor
  • Elbow extension, wrist extension (1)
  • Wrist adductor

22
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23
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24
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25
Attachments
  • Elbow and Wrist (6)
  • Elbow flexion, wrist flexion (3)
  • 1 wrist abductor
  • 1 wrist adductor
  • 1 flexor only
  • Elbow flexion, wrist extension (2)
  • 1 wrist abductor
  • 1 wrist adductor
  • Elbow extension, wrist extension (1)
  • Wrist adductor

26
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27
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28
Attachments
  • Elbow and Wrist (6)
  • Elbow flexion, wrist flexion (3)
  • 1 wrist abductor
  • 1 wrist adductor
  • 1 flexor only
  • Elbow flexion, wrist extension (2)
  • 1 wrist abductor
  • 1 wrist adductor
  • Elbow extension, wrist extension (1)
  • Wrist adductor

29
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30
Attachment Rules
  • Elbow/Wrist/Hand and Elbow/Wrist Muscles
  • Wrist Flexors
  • Proximal Medial or Lateral epicondyle of humerus
  • Distal Depends
  • Wrist Extensors
  • Proximal Medial or Lateral epicondyle of humerus
  • Distal Depends

31
Attachments
  • Wrist and Hand (6)
  • Wrist flexion, finger flexion (1)
  • Wrist flexion, thumb flexion (1)
  • Wrist abductor
  • Wrist flexion, thumb abduction (1)
  • Wrist abductor
  • Wrist extension, index finger extension (1)
  • Wrist extension, thumb extension (2)
  • Wrist abductors

32
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33
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34
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35
Attachments
  • Wrist and Hand (6)
  • Wrist flexion, finger flexion (1)
  • Wrist flexion, thumb flexion (1)
  • Wrist abductor
  • Wrist flexion, thumb abduction (1)
  • Wrist abductor
  • Wrist extension, index finger extension (1)
  • Wrist extension, thumb extension (2)
  • Wrist abductors

36
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37
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38
Attachment Rules
  • Wrist/Hand Muscles
  • Wrist Flexors
  • Proximal Anterior or Posterior forearm
  • Distal Depends
  • Wrist Extensors
  • Proximal Anterior or Posterior forearm
  • Distal Depends

39
Intrinsic Muscles (18)
40
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