ANATOMY

Detailed explanation-1: -The ulna is one of two bones in your forearm. The other is your radius. The ulna is on the medial (pinkie) side of your forearm.

Detailed explanation-2: -The ulna is one of two bones that make up the forearm, the other being the radius. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally. It is located in the medial forearm when the arm is in the anatomical position. It is the larger of the two forearm bones.

Detailed explanation-3: -Similar to the radial shaft, the medially projecting interosseous border of the ulna is sharp and serves as a surface of attachment for the fibrous interosseous membrane, which connects the ulna to the radius.

Detailed explanation-4: -The ulna forms the skeleton of the medial part of the forearm and is a long bone, consisting of an expanded proximal end, a shaft and a head at the distal end.

Detailed explanation-5: -The Standard Model for Anatomical Positions In this position, the two bones of the forearm-the radius and ulna-are parallel from the elbow to the wrist. When we turn our palms to face backward, the radius crosses over the ulna like an ‘X’.