07/08/2024
🐴❤️ The Hoof: The Horse's Second Heart ❤️🐴
Did you know? Blood is pumped from the heart through arteries to the hoof, and a unique "pumping mechanism" in the hoof helps return it to the heart! This mechanism is crucial since there are no muscles in the lower leg or hoof to assist blood return.
Inside the hoof, a network of veins called the venous plexus is compressed by the plantar cushion and coffin bone, acting as a pump to push blood up the leg. One-way valves in the veins prevent blood from flowing back, while compression creates a "hydraulic cushion" that absorbs shock and protects the coffin bone.
This amazing valve action generates fluid pressure that, when the hoof is raised, causes blood to flow up the leg and refill the plexuses. When the hoof bears weight, the veins are compressed; when lifted, the veins open, allowing blood to be pushed in by arterial pulses and gravity. The weight of the horse aids in propelling the blood back up the leg, a process often referred to as the "second heart."