Which bones do the bifurcations of the suspensory attach to?

• A. Coffin bone
• B. Sigmoidal bones
• C. Sesamoid bones
• D. Splint bones

Answer: (B)

The suspensory ligament splits to anchor on the proximal sesamoid bones at the fetlock. These two small sesamoid bones sit just behind the fetlock joint, and the two branches of the suspensory wrap around the area to attach there. This arrangement provides a strong anchor point that helps prevent hyperextension of the fetlock under load and aids in supporting the joint during motion. So the bifurcations attach to the proximal sesamoid bones (the sesamoid bones near the fetlock). The other structures mentioned have different roles in the limb and are not the attachment sites for these bifurcations.