In anatomical position, the radius is on the medial side.
true or false?

In anatomical position, the radius is on the medial side is a false statement.

Explanation:

Anatomically, the radius lies lateral to the forearm, distal to the elbow, and runs parallel to the ulna.

When the arm is held on the side with the palm hanging downward and forward right at the hip level, the radius anatomically can be seen located laterally on the forearm right between elbow and thumb.

When the arm is held in the resting position, with hand held on a desk, the radius cross over with the ulna and lies above the ulna.

This anatomical position helps the radius to pivot along with the ulna to facilitate rotational movement at the distal radioulnar joint of the wrist.