What causes SI joint flare ups?

Answered by Douglas Hiatt

I can provide a detailed answer in an informal style about the causes of sacroiliac (SI) joint flare-ups.

One of the main triggers for SI joint flare-ups is prolonged sitting or standing. When we sit or stand for extended periods of time, especially in poor posture, it can put excessive stress on the SI joint. This can lead to inflammation and pain in the area. So, if you have a job that requires you to sit for long hours or if you stand for a significant portion of the day, it can be a contributing factor to SI joint pain.

Another activity that can aggravate the SI joint is standing on one leg. This can happen when we engage in activities like yoga, where balancing on one leg is common. The imbalance created by standing on one leg can put strain on the SI joint and result in pain.

Stair climbing is another activity that can worsen SI joint pain. The repetitive motion and the increased load on the joint while going up or down stairs can exacerbate inflammation and cause discomfort.

Transitions from sitting to standing can also be a trigger for SI joint flare-ups. The shifting of weight and the change in posture during this transition can put stress on the SI joint, especially if done abruptly or with poor form.

For some individuals, running can be a culprit for SI joint pain. The impact and repetitive motion involved in running can cause irritation and inflammation in the joint. It’s important to have proper running shoes and maintain good running form to minimize the impact on the SI joint.

In terms of underlying causes, several factors can contribute to SI joint pain. Arthritis, both osteoarthritis and inflammatory arthritis, can affect the SI joint and lead to flare-ups. Traumatic injuries, such as falls or accidents that involve the pelvis or lower back, can also damage the SI joint and result in ongoing pain.

Pregnancy and post-partum periods are known to put strain on the SI joint. The increased weight and hormonal changes during pregnancy can loosen the ligaments around the joint, causing instability and discomfort. Similarly, the physical stress of childbirth can further aggravate the SI joint.

Systemic inflammatory conditions, like ankylosing spondylitis or psoriatic arthritis, can target the SI joint and cause chronic inflammation and pain.

Lastly, although rare, infection can also lead to SI joint pain. Infections in the pelvic area or bloodstream can spread to the SI joint and cause inflammation and discomfort.

It’s important to note that everyone’s experience with SI joint pain can be different, and what triggers flare-ups for one person may not affect another. However, by understanding these potential causes, individuals can better manage their SI joint pain and make informed decisions about activities and treatment options.