While not all instances of sacroiliac injury can be treated, for some, sacroiliac exercises can be very helpful toward relieving sacroiliac joint pain, curing lower back pain and even preventing SI joint dysfunction from reoccurring.
Below there are a few exercises and stretches for SI joint pain and dysfunction as well as some exercises and activities to avoid. But these should not be undertaken until you have consulted with a doctor to make sure your condition is such that physical therapy for SI joint pain will not cause further harm. You may also want to consider a sacroiliac belt for added treatment and pain relief in addition to exercising.
Many SI joint pain exercises have their roots in either pilates or yoga, as both of these practices emphasize improving flexibility, balance, strength and stability. Improving on these things relative to the SI joint and related tissues can help with sacroiliac joint pain management.