What is the function of the ulna in a horse?

The ulna in a horse serves as a supporting bone in the forelimb, playing a crucial role in the structure and stability of the leg. Although it is not as prominent in horses as in some other animals, the ulna contributes to the overall strength of the antebrachium (forearm) and assists in the movement of the elbow joint. In horses, the ulna is typically fused with the radius, which allows for efficient locomotion and weight-bearing capabilities.