Prolotherapy on my illiopsoas ligament stopped the subluxing of my hip caused by the hypermobile SI Joint. My SI Joint still moves out of place a bit, but a knee to the chest realigns it. I do that twice a day, one knee at a time, and a stretch of the ligaments on both sides by dropping a leg to the floor while lying on the edge of the bed.
I was told by 5 doctors that SI Joints don't move until I found a Regenerative Medicine doctor. The subluxions had begun after 2-3 years of walking around with one leg shorted by a hip operation to replace a broken ball joint caused by a fall on the ice. The SI Joint accommodated the leg length difference. Fixing the lax ligament has meant no more subluxions!