Blood Pumping Mechanism of the Hoof
13 hours ago
- #equine circulation
- #venous return mechanism
- #hoof anatomy
- Blood is pumped from the heart through arteries to the hoof and relies on a hoof 'pumping mechanism' for venous return due to lack of leg muscles.
- An extensive venous plexus on lateral cartilages and sensitive hoof structures compresses under pressure from plantar cushion or coffin bone, acting as a pump.
- One-way veins valves prevent backflow, compression creates a 'hydraulic cushion' to dissipate concussion, and fluid pressure assists blood flow with hoof movement.
- Each weight-bearing step compresses veins; lifting opens them, allowing arterial pulse and gravity to fill plexuses, pushing blood up the leg.
- The coffin bone's role in this mechanism is critical for circulation, often called the 'second heart,' emphasizing its importance in equine physiology.