Interosseous border of the ulna

Definition

The interosseous border of the ulna is a specific edge on the ulna bone in the forearm that serves as an attachment site for the interosseous membrane, which spans between the ulna and radius. This border runs longitudinally along the length of the ulna, facing towards the radius.

Related terms

Ulna:

One of two long bones in the forearm, extending from the elbow to the smallest finger side.

Radius:

The other long bone in the forearm, located on the thumb side, which works with the ulna to enable wrist and arm movement.

Interosseous Membrane:

A fibrous sheet connecting the radius and ulna along their lengths, providing stability to the forearm and facilitating force transfer during arm movements