The Sacroiliac Joint (SIJ) is the joint that connects the sacrum to the other 2 parts of the pelvis. It is held together by thick fibrous ligaments and by design it is a very stiff/immobile joint. The SIJ does not (and will not) move in the majority of individuals, except under certain circumstances.

In males, this joint is basically “stuck” together by the early 20s, but will be more mobile in females. Biology allows for increased mobility in females where true SIJ issues are more common compared to males.

Specific sources of known SIJ dysfunction or pain tend to be related to stepping off a curb and landing on one leg hard, a fall or MVA onto outstretched leg or direct blow to pelvis, as well as pregnancy and post-partum. Other individuals with increased joint laxity also are more prone to issues here.

So, how can there be pain in the SIJ region without the SIJ being the true source?

Well, pretty much all levels of the low back can refer pain into the SIJ region. And the gluteals as well as the piriformis have attachments at or near the SIJ also creating the potential for referred pain.

There are a series of tests that can be performed that will inform a medical provider as to the likelihood of the SIJ being the true source of pain vs referred pain. That said, the good news is, conservative treatments can be very successful.

Addressing any flexibility or strength imbalances that may be noted on exam tends to be highly beneficial in this population. Other specific hands-on treatments are also known to be helpful as well in a specific subset with SIJ pain.

If you believe the Sacroiliac Joint is your problem or may be the problem and want to know more, then fill out this quick form to request more information and learn how to no longer live with SIJ pain.