What is the SIJ?
The SI joints are located either side of the lower spine, in between your pelvis, specifically, they connect the sacrum to the iliac bones — hence the name sacroiliac! The joints themselves are pretty immobile and only allow for a few degrees of movement, BUT they serve an important purpose as shock absorbers. They also help reduce the pressure on your spine by distributing weight across your pelvis, so it’s important that your back pain is diagnosed correctly!
What causes SIJ pain?
SIJ pain or SIJ dysfunction occurs when the SI joints are inflamed and are either restricted or moving too much. If they are restricted, they may be stuck in a slight rotation from their ideal position, which can wreak havoc on your pelvis and the rest of your body. SIJ pain could be triggered from:
- Injury or trauma, such as a fall or car accident.
- Persistent impact from running or climbing stairs.
- Loose ligaments due to hormones in pregnancy.
- Abnormal walking patterns.
- Certain medical conditions such as arthritis.
- One leg being shorter than the other.
Symptoms
SIJ pain is typically felt in the lower back and buttocks, but can also present around the hip, groin and extend down the leg to the knee. It usually feels like a sharp, dull or a stabbing pain. In most cases, SIJ pain is typically felt on one side of the body but may present itself in both joints as well (but this is much less common).
