It lies at the distal (far) end of the third metacarpal (cannon bone) and the proximal (close) end of the first phalanx (long pastern). The fetlock joint in horses is known as the metacarpus. If hind fetlock lameness is apparent, but neither x-rays nor ultrasound reveals any diagnosis, your veterinarian may refer the horse for additional imaging such as CT or MRI scans. An ultrasound may be used to check for soft-tissue injury. The vet may also perform x-rays of multiple views of the joint to visualize any changes to the bones. They may perform a flexion test to simulate stress on the joint. Your veterinarian will then perform a lameness exam, watching the horse walk, trot, and canter in a straight line and circle. To diagnose hind fetlock lameness in your horse, your veterinarian will first palpate the fetlock for any swelling or heat. A “dropping” of one or both fetlocks that is lower than normal.Reluctance to weight bear on the affected limb.You can look for swelling or heat in this joint as one of the first signs of a hind fetlock injury. Lameness is relatively easy to notice in this joint because the soft tissue structures of the fetlock have limited protective coverings (i.e. As a result, lameness can be seen even with minor injuries. The hind end fetlock plays a critical role in supporting the horse’s weight. Keep your horse at a healthy body weight, condition them appropriately for their job, and watch closely for any signs of soreness.Īlways ensure that you support your horse’s joints with a good nutrition program and consider supplementing with anti-inflammatory nutrients that promote joint comfort. You can help to prevent hind fetlock lameness in your horse with good care and management. Vigilance and quick intervention are necessary to give your horse the best possible chance of recovery. Hind fetlock disorders range from minor issue requiring temporary rest and ice to career-ending injuries. Eventers are more prone to fore-fetlock injuries, likely due to the landing forces after large jumps. Performance horses such as racehorses and dressage horses are prone to hind fetlock injuries. In severe cases, horses may be unable to weight-bare on the limb. Horses with hind fetlock lameness often show signs of heat and swelling in this joint. This joint is highly susceptible to soft-tissue injuries and bone disorders. The hind fetlock is a high-motion joint that undergoes significant compression and force absorption when the horse is moving.
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