The sacrum, a triangular bone, fits like the keystone of a bridge in between the two pelvic bones called the ilia. The SI joints are the tiny vertical joint spaces between the sacrum and the ilia. Unlike many joints of the body, they have very little motion, but their ability to move is vital to pelvic stability and positioning. SI joint is a gliding joint different from hinge-type joints. Frequently, muscle imbalance patterns develop as tissues become strained from overuse, under-use or abuse. The hip flexor muscle may be involved in the functions of the SI joint but it cannot cause the actual condition alone. In the early stages of a typical SI pain episode, protective muscle spasm arises as the sacrum gets stuck side-bent and rotated between the ilia, usually from a forward-bending and twisting incident. It then produces muscle toxicity and weakness causing increased SI ligament loading and overstretching. As the articulating joint surfaces become jarred loose, ligament micro-tearing creates an inflammatory response. We do have a program that can help with sacroiliac joint pain. You can check out this link to learn more about the program http://sacroiliacpainsolution.com/end-si-joint-pain/.
On the other hand, the program can only address the issue if it is due to muscular imbalance. Considering your condition it is best that you consult your doctor we need to consider that what you currently have is a structural issue. Traditional exercises rarely help this issue and it takes a specific protocol to restore the SI joint mobility and pelvic and sacral alignment.
Please be guided Snapping hip is an audible clicking or snapping sensation caused by hip movement that can be painful. There are a variety of reasons patients present with a clicking or snapping sensation in the hip. A click in the hip can be the result of the following: a labral tear, iliotibial band syndrome, psoas bursitis, psoas tendon snap, and arthritis of the hip. In relation to your back, popping or clicking sounds could sometimes be a sign of excessive strain on the lumbar region. Clicking noises are often attributed to joint manipulation. It is believed that these arise when the gas that is trapped within the synovial fluid in the joint is released. These are usually harmless, but if these sounds are accompanied by pain, one must consult a doctor.