The HeroSI Hybrid SI system involves implanting both the Patriot SI and Liberty SI products as a hybrid construct. The Patriot SI Posterior Implant System is a minimally invasive SI joint fusion implant intended for implantation on a trajectory inline with the joint space. The additively manufactured titanium implant is available in one size, fixating on both the sacrum and ilium via external threads. The procedure also involves the lateral insertion of a small titanium Liberty SI implant transfixing the SI joint to stabilize and fuse the joint.