Your core muscles: specifically the transversus abdominis and oblique abdominals, through their attachments to the iliac bones, help the pelvis closure and improve the position, control, and stability of the sacroiliac joints. The most crucial sacroiliac stabilising muscles are your deep abdominal core muscles and your deep gluteal muscle groups. Like most joints, your surrounding muscles act to stabilise your sacroiliac joints during stressful or vulnerable positions. Your sacroiliac joints should move a few degrees for normal movement. What Causes Sacroiliac Joint Hypermobility? Hypomobility is typically associated with pathologies that tend to stiffen your sacroiliac joints, such as in Ankylosing Spondylitis. Hypermobility issues are the most common and will be discussed further in this article.
It would be best if you had both normal SI Joint movement and muscle control around this area to avoid SI Joint pain and injury. When your sacroiliac joints are not moving generally due to either stiffness or excessive movement, it is k as Sacroiliac Joint Dysfunction or SIJ Dysfunction, which commonly results in sacroiliac pain. But that subtle movement is healthy and very important. Due to the substantial weight-bearing forces placed upon this area, your sacroiliac joints are a reasonably stiff link between the pelvic bones and allow only a few degrees of movement. The sacrum (tailbone) connects on the right and left sides of the ilia (pelvic bones) to form your sacroiliac joints. Your Sacroiliac Joints (SIJs) are a critical linkage system between your lower spine and pelvis. Sacroiliac Joint (SIJ) What is Sacroiliac Joint Pain?