White-tail Deer Ulna

Features:

• Medial to the radius in humans, posterior to the radius in white-tail deer

• Trochlear notch creates a u-shaped feature that makes the Ulna easy to remember

• Proximal end articulates with the distal end of the humerus

• In some non-human mammals, the ulna is fused to the radius which restricts the rotation of the limb, but are separate bones in white-tail deer

Human vs. Non-human Comparison:

• White-tail deer ulnae have a much more well-developed olecranon process compared to human

• The shaft of the white-tail deer ulnae is thin and curved compared to the human ulna which is straight

Return to White-tail Deer Bone Atlas