How are si joint fusions performed?

When indicated,: after failure of conservative management. An experienced spinal surgeon can perform this for you. But most sacroiliac joint dysfunction responds nicely to the appropriate conservative management, only very few of them will need surgery. It is done in a manner requiring about 2-3 cm incision, with fluoroscopy, and about 3 stabilizing implants. With bonegraft placed in joint for best results.

Si Joint: I agree with the prior answer but for more detail, the implants are placed through the buttock muscle from the side, going from the outer bone of the joint (the ilium) to the inner bone (the sacrum) bridging and spanning the joint, which causes the joint to have no motion, and fuse together. This is for patients who have failed rhiztomy/ablation.