Three conditions that are frequently discussed together are lumbosacral (LS) pain, sacroiliac (SI) region pain, and primary hindlimb lameness. These conditions often produce similar signs, and understanding the differences between these disorders can help owners, trainers, and riders communicate more effectively with their veterinarian and recognize when further investigation is needed.

The equine hock, also called the tarsus, is one of the most important structures in the horse’s hind limb. It plays a central role in movement, athletic performance, balance, and soundness. Because of this, the hock is also one of the most common locations for arthritis, strain, and performance-related lameness. Understanding how the hock works can help horse owners better recognize early signs of discomfort.

The equine carpus is one of the most important joints in the horse’s body. Every time a horse gallops, lands from a jump, turns sharply, or even walks across uneven ground, the carpus helps absorb force and stabilize the limb. Because of the tremendous stresses placed on it, the carpus is also one of the most commonly injured joints in athletic horses. Understanding how this joint works can help horse owners better recognize problems early.

The pastern joint is one of those structures that rarely gets attention until something goes wrong. Yet it plays an essential role in how a horse moves, carries weight, and stays sound. Understanding this joint gives you a clearer picture of how the limb functions as a whole, and why small changes in conformation or workload can have significant consequences.

The "distal interphalangeal joint", commonly known as the coffin joint, sits entirely inside the hoof capsule, hidden from view, yet it plays a central role in how your horse moves, absorbs impact, and carries weight. Learn how this joint can impact your horse's soundness.

Learn all the anatomical parts involved in the equine fetlock joint

Everything a horse owner should know about the horse's hip joint: from its anatomy and unction, to common issues and injuries that can affect it.

Learn the anatomy and function of the equine stifle, and its importance to soundness and performance

Every movement your horse makes, from grazing quietly to clearing a jump, depends on the coordinated function of its joints. Understanding how joints work gives you a clearer picture of soundness, performance, and where problems can develop.