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Question 1

What ligaments strengthen the distal radio-ulnar joint?

Answer 1

The anterior and posterior ligaments strengthen the joint.

Question 2

What happens to the radius during pronation at the distal radio-ulnar joint?

Answer 2

The distal end of the radius moves anteriorly and medially, crossing over the ulna.

Question 3

What happens to the radius during supination at the distal radio-ulnar joint?

Answer 3

The radius uncrosses from the ulna, moving laterally and posteriorly.

Question 4

Which muscles are involved in moving the distal radio-ulnar joint?

Answer 4

The same muscles that move the proximal radio-ulnar joint also move the distal radio-ulnar joint.

Question 5

What is the blood supply to the distal radio-ulnar joint?

Answer 5

The anterior and posterior interosseous arteries supply the distal radio-ulnar joint.

Question 6

Which nerves supply the distal radio-ulnar joint?

Answer 6

The anterior and posterior interosseous nerves supply the distal radio-ulnar joint.