Dysfunction in the sacroiliac joint, or SI joint, is a well-known cause of low back pain. It can also cause leg pain. The leg pain can be particularly difficult to diagnose, and may feel similar to sciatica or pain caused by a lumbar disc herniation.
The sacroiliac joint lies next to the bottom of the spine, below the lumbar spine and above the tailbone (coccyx). It connects the sacrum (the triangular bone at the bottom of the spine) with the pelvis (iliac crest).
While it is not clear how the pain is caused, it is thought that an alteration in the normal joint motion may be the culprit that causes sacroiliac pain. The source of pain can be caused by either:
Dr. Liechty is a board-certified neurosurgeon specializing in minimally invasive surgical technique. He uses advanced anatomy-conserving technologies and many of the world’s most minimally invasive fusion techniques, allowing for complex procedures to be done through an incision as small 1.5 centimeters.
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