Sacroiliac joint pain arises from degenerative changes within the joint or sometimes from hypermobile (loose joint). In addition, it could be deteriorate due to increasing stress from prior lumbar fusion surgery. These changes may cause inflammation. The mainstay of treatment is anti-inflammatory medication, physical therapy, chiropractic care and activity modification. If these treatments fail to provide adequate pain relief, injections may be considered.
Sacroiliac joint injections may also be used as a diagnostic evaluation. If the pain decreases significantly after the injection, this helps to verify the joint as a pain generator. This can be helpful in planning future treatment.
You must have at least 75% relief from diagnostic injection during the anesthetic time usually within the first 24 hours but the key is the first 6 hours; then you will be a candidate for nerve block, and or surgery MIS SIJ fusion.