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Radiograph of a horse hoof showing rotation of the coffin bone and evidence of sinking, a condition often associated with laminitis. The annotation P2 stands for the middle phalanx, or pastern bone, and P3 denotes the distal phalanx, or coffin bone. The yellow lines mark the distance between the top and bottom part of the coffin bone relative ...
At rest, the DDFT applies a constant traction to the bottom surface of the coffin bone, which is counteracted by the laminae holding the coffin bone to the hoof wall. DDFT tenotomy is usually recommended in cases of laminitis and coffin bone rotation that is chronic or non-responsive to other forms of treatment.
Change in shape of the hoof wall is also common in horses with laminitis. "Founder rings," or thickened concentric rings in the hoof wall, indicate a past episode of laminitis. Concavity of the dorsal (front) surface of the hoof can indicate chronic laminitis. The sole may become convex if the coffin bone begins to push through the bottom of ...
A coffin bone coffin bone shown in relationship to a horseshoe. The coffin bone, also known as the pedal bone (U.S.), is the distal phalanx, the bottommost bone in the front and rear legs of horses, cattle, pigs and other ruminants. It is encased by the hoof capsule. In horses and other odd-toed ungulates it is the third phalanx, or "P3"; in ...
The navicular bone is supported by several ligaments above, below, and on the side. One of these ligaments is the impar ligament, which attaches the navicular bone to the coffin bone (distal phalanx). Cartilage lies between the navicular bone and the coffin joint, as well as between the navicular bone and the DDF tendon. The navicular bursa—a ...
The outer part, called the hoof capsule, is composed of various cornified specialized structures. The inner, living part of the hoof, is made up of soft tissues and bone. The cornified materials of the hoof capsule differ in structure and properties. Dorsally, it covers, protects, and supports P3 (also known as the coffin bone, pedal bone, or ...
The coffin bone. The hoof of the horse contains over a dozen different structures, including bones, cartilage, tendons and tissues. The coffin or pedal bone is the major hoof bone, supporting the majority of the weight. Behind the coffin bone is the navicular bone, itself cushioned by the navicular bursa, a fluid-filled sac.
Dr Vernon Dryden of Rood & Riddle Equine Hospital said that Bal a Bali had full-blown laminitis: the coffin bone was displaced and had rotated down and away from the wall of the hoof. Treatments included use of a cold water spa (cryotherapy) and injection of several doses of stem cells into the bone marrow.