What is the middle joint of the back leg called?

The most important joint on the back leg of the horse is called the hock. The horse's hindquarter has four joints, which allows better motion through mud and on elevated surfaces. There is the hip joint, and then the stifle is comparable to the human knee and the very important hock, which is comparable to the human ankle, followed by the fetlock, which is the ankle on the horse but is more like the ball of the foot on humans.

Out of all of these joints, the hock is the most important, and if it is healthy and working properly, they help give the power to propel the force to move the horse's body forward.

You would call these the sacroiliac joints. They are in charge of linking your pelvis with your lower spine. You may think that the joints are small but they are made up of the structure above your tailbone which is called the sacrum and also the ilium or the top portion of your pelvis. Some people may experience sacroiliac joint pain when their ligaments become too loose.

At times, it may also get too tight because of the different movements that people do, a fall, or other accidents. There is a type of injection that can be applied as a treatment for joint pain. The doctor will recommend the right treatment depending on the symptoms that are being experienced.

The middle joint of the back leg is called the sacroiliac joint. This joint connects the pelvis and the lower spine. In other words, the sacroiliac joint is made of the hip bones and the sacrum. The SI also consists of strong ligaments that allow both the pelvis and the lower spine to connect strongly.

The SI joint consists of two ilium bones, i.e., one ilium at each side and the sacrum at the middle. The point of connection between the ilium bones and the sacrum is the sacroiliac joint. While the ilium bones are supporting the sacrum, the sacrum is supporting the spine.

As a result, the body can now maintain its stability. Although there are other functions of the sacroiliac joint, its primary function is to act as the shock absorber between the pelvis and the legs, and the upper body. The sacroiliac joint is very important to the structure of the body as it helps in supporting the total weight of the upper body.

Sacroiliac joints are situated between the iliac bones and the sacrum, uniting the spine to the hips. The two joints provide assistance, stability and play a significant role in engaging shock when striding and lifting. From the back, the SI joints are situated below the waist, where two indentations are visible. The SI joint is a synovial joint saturated with liquid. This joint consists of nerve endings that can cause chronic pain if the joint collapses or does not move properly. Strong ligaments and muscles assist the SI joints between the sacrum and the pelvis's ileum bones, which are attached by strong ligaments. In human beings, the sacrum supports the spinal column and is favored by the ileum on each side. The joint is strong and supports the full weight of the upper body.