Wrist and Hand Joints

1. Wrist and Hand Joints Anatomy and Physiology of Human Movement 420:050

2. Wrist and Hand Joints • Complex • 29 bones • ~ 29 joints • > 30 muscles • Simplification • Carpals • Extrinsic muscles only • 7 joints

3. Objectives • 1. Be able to identify the bones of the wrist and hand joints. • 2. Be able to identify the wrist and hand joints • 3. Be able to identify the landmarks of the lower ulna and lower radius. • 4. Be able to identify and describe the movements of the wrist and hand joints. • 5. Be able to identify and describe the general attachments (distal/proximal), and movements of the wrist and hand joint muscles.

4. Wrist and Hand Joint Bones • Radius • Ulna • Carpals • Metacarpals • Proximal phalanges • Middle phalanges • Distal phalanges

5. Middle?

6. Objectives • 1. Be able to identify the bones of the wrist and hand joints. • 2. Be able to identify the wrist and hand joints • 3. Be able to identify the landmarks of the lower ulna and lower radius. • 4. Be able to identify and describe the movements of the wrist and hand joints. • 5. Be able to identify and describe the general attachments (distal/proximal), and movements of the wrist and hand joint muscles.

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

8. Radiocarpal joint

9. Objectives • 1. Be able to identify the bones of the wrist and hand joints. • 2. Be able to identify the wrist and hand joints • 3. Be able to identify the landmarks of the lower ulna and lower radius. • 4. Be able to identify and describe the movements of the wrist and hand joints. • 5. Be able to identify and describe the general attachments (distal/proximal), and movements of the wrist and hand joint muscles.

10. Bony Landmarks • Styloid process of ulna • Styloid process of radius

11. Objectives • 1. Be able to identify the bones of the wrist and hand joints. • 2. Be able to identify the wrist and hand joints • 3. Be able to identify the landmarks of the lower ulna and lower radius. • 4. Be able to identify and describe the movements of the wrist and hand joints. • 5. Be able to identify and describe the general attachments (distal/proximal), and movements of the wrist and hand joint muscles.

12. Wrist and Hand Joint Movements • Wrist flexion/extension • Wrist abduction/adduction • Radial/ulnar deviation • Wrist circumduction • Finger flexion/extension • Finger abduction/adduction • Finger circumduction

13. Wrist and Hand Joint Movements • Radiocarpal joint: Biaxial ball and socket Movement: F/E, Abd/Add, Circ. • Intercarpal joints: Nonaxial Movement: Linear gliding • Carpometacarpal joints (F): Nonaxial Movement: Linear gliding • Carpometacarpal joint (T): Biaxial saddle Movement: F/E, Abd/Add, Circ.

14. Wrist and Hand Joint Movements • Metacarpophalangeal joints (F): Biaxial ball and socket Movement: F/E, Abd/Add, Circ. • Metacarpophalangeal joint (T): Uniaxial hinge Movement: F/E • Proximal interphalangeal joints: Uniaxial hinge Movement: F/E

15. Wrist and Hand Joint Movements • Distal interphalangeal joints: Uniaxial hinge Movement: F/E • Interphalangeal joint: Uniaxial hinge Movement: F/E