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A draft horse sleeping while standing up. The stay apparatus is an arrangement of muscles, tendons, and ligaments that work together so that an animal can remain standing with virtually no muscular effort. [1] It is best known as the mechanism by which horses can enter a light sleep while still standing up. [2]
Injury to this ligament is an important cause of lameness in performance horses. The suspensory is a modified muscle, the equine equivalent of the interosseous muscle, which contains both tendon fibers and residual muscle fibers. [1] Interosseous ligaments: connect the cannon bone to each splint bone.
Gracilis: originates from the pelvic symphysis all the way to the pubic tendon. Inserts into the medial femorotibial ligament, medial side of the tibia, and medial patellar ligament. Adducts the limb. Iliacus: originates on ventral side of ilium, inserts into trochanter minor of femur with a tendon that intersects with a tendon of the psoas ...
Suspensory ligament of thyroid gland, also known as Berry's ligament Part of the suspensory apparatus of the leg of a horse . When the leg is supporting the horse's weight, this ligament supports the fetlock joint.
Horses use a group of ligaments, tendons and muscles known as the stay apparatus to "lock" major joints in the limbs, allowing them to remain standing while relaxed or asleep. The lower part of the stay apparatus consists of the suspensory apparatus, which is the same in both sets of limbs, while the upper portion differs between the fore and ...
The young horse can become enthralled by something as simple as blowing air or a pile of dirt (his favorite to roll around in), which keeps Molly Jo on her toes. Clearly, there's never a dull day ...
The size and position of this bony lump determine whether a splint is likely to cause long-term lameness. The lump can interfere with the knee joint or the suspensory ligament, which runs down the back of the cannon bone. [50] Splints force 7% of racehorses to retire. [47] Luxations are joint dislocations and account for 8% of fatal injuries.
The callus formed due to splint bone injury can become large and put pressure on the suspensory ligament. Bone heals by formation of a callus over the defective area. Speed and quality of healing is directly related to the blood supply and fracture stability. Rest is required immediately following injury to reduce movement of the fracture site.