Your sacroiliac (si) joints are where your spine (sacrum) and pelvis (iliac) connect. Sacroiliac pain can mimic other conditions, such as a herniated disc or hip problem The sacroiliac joints link the pelvis and lower spine
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These two joints are made up of the bony structure above the tailbone, known as the sacrum, and the top part of the pelvis, known as the ilium.
You have one si joint on each side of your lower spine
More specifically, these joints are found where the flat bone at the base of your spine (known as your sacrum) meets your ilium or hip. Sacroiliitis happens when something irritates or damages one or both of your sacroiliac joints This irritation leads to inflammation, which causes pain that you’ll usually feel in your low back and butt. Sacroiliac (si) joint dysfunction describes pain due to abnormal movement (too much or too little) or misalignment of the si joint
It can cause sharp, stabbing pain that starts in the hips and pelvis and radiates into the lower back and down the thighs. The sacroiliac joint or si joint (sij) is the joint between the sacrum and the ilium bones of the pelvis, which are connected by strong ligaments In humans, the sacrum supports the spine and is supported in turn by an ilium on each side. Sacroiliac (si) joint pain is felt in the low back and buttocks
The pain is caused by damage or injury to the joint between the spine and hip
