Causes

There are various causes leading to sacroiliitis but in some cases the origin of the disease is unknown. These are:

Trauma (e.g. car accident with strong impact while pressing the break pedal)

Falls

Prolonged sacro-iliac joint dysfunction

Infection (bacteria migrating and depositing in the sacro-iliac joint)

Leg length discrepancy

Chronic arthritic conditions (rheumatoid/psoriatic arthritis, Reiter's syndrome, autoimmune spondylo-arthropathy)

Pregnancy