Distal sesamoidean ligaments connect proximal sesamoid bones to which structure?

Distal sesamoidean ligaments connect proximal sesamoid bones to which structure?

• A. Distal phalanx
• B. Proximal phalanx
• C. Metacarpus
• D. Navicular bone

Answer: (A)

Distal sesamoidean ligaments are the connections that run from the distal sesamoid bones (the small bones behind the fetlock) down to the coffin bone, which is the distal phalanx. They cross the area around the pastern and coffin joints to transmit forces from the deep digital flexor tendon to the coffin bone as the limb bears weight. This arrangement helps stabilize the end of the limb and supports the stay apparatus, allowing the horse to stand with minimal muscular effort. They aren’t primarily attached to the metacarpus or navicular bone, and their main role isn’t to connect to the proximal phalanx, so linking the distal sesamoid bones to the distal phalanx is the best description of their function.