What happens when distal sesamoidean ligaments rupture?

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Multiple Choice

What happens when distal sesamoidean ligaments rupture?

Explanation:
Distal sesamoidean ligaments act as tension cables that stabilize the fetlock and keep the stay apparatus functioning during weight bearing. They resist the tendency of the fetlock to over-extend when the limb is loaded and the muscles are relaxed. If these ligaments rupture, that passive restraint is lost, the fetlock can hyperextend, and the stay mechanism collapses. The horse then presents with severe lameness due to instability and inability to support weight through the limb.

Distal sesamoidean ligaments act as tension cables that stabilize the fetlock and keep the stay apparatus functioning during weight bearing. They resist the tendency of the fetlock to over-extend when the limb is loaded and the muscles are relaxed. If these ligaments rupture, that passive restraint is lost, the fetlock can hyperextend, and the stay mechanism collapses. The horse then presents with severe lameness due to instability and inability to support weight through the limb.

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