Distal RU joint

Question 1

What are the articular surfaces of the distal RU joint?

Answer 1

Those are the head of the ulna + the ulnar notch of the radius

Question 2

What structure can we find there?

Answer 2

We can find an articular disk which separates the distal radioulnar joint from the radiocarpal joint.

Question 3

Describe the capsule of the distal RU joint

Answer 3

The capsule is lax and it extends from the INFERIOR sacciform recess up to the shaft of the ulna.

Question 4

Describe the path in which the interosseous membrane stretches

Answer 4

Proximal laterally to the medial side of the ulna. Fibers od OBLIQUE cord run in the opposite direction, and they reinforce the interosseous membrane.

Question 5

Describe the position of the oblique cord + its attachment sites

Answer 5

Starts at the ulnar tuberosity and extends to the interosseous border of the radius, distal to the radial tuberosity.