Wrist & Hand

Question 0

What are the motions at wrist joint?

Answer 0

Flexion
Extension
Radial & ulnar deviation
Circumduction

Question 1

What is the function of the wrist?

Answer 1

Provides a stable base for the hand to function
Promotes gripping activities
Assists with positioning for fine motor activities

Question 2

Ligaments at the wrist joint

Answer 2

Anterior and posterior ligaments - help strengthen capsule
Ulnar collateral - attaches to the ulnar styloid process and triquetrum
Radial collateral - attaches to radial styloid process and scaphoid

Question 3

What limits ulnar deviation?

Answer 3

Radial collateral ligament

Question 4

What limits radial deviation?

Answer 4

Ulnar collateral ligament

Question 5

What does the flexor retinaculum do?

Answer 5

Spans area between pisiform, hamate, scaphoid, and trapezium
Transforms carpal arch into a tunnel
Serves as attachment for thenar and hypothenar muscles
Maintains carpal arch
Prevents bowstringing of tendons
Protects median nerve

Question 6

Guyon’s canal

Answer 6

Ulnar nerve and artery