2.1
The iFuse implant system (SI‑Bone) is a titanium implant intended for use in people with chronic sacroiliac joint pain. iFuse is placed across the sacroiliac joint using minimally invasive surgery, where it is intended to stabilise the joint and to correct any misalignment or weakness that can cause chronic pain. The implant is triangular, which is designed to limit movement and spread shear stresses evenly. The original iFuse implant has a porous metal coating, which the company claims promotes bone‑on‑bone growth and encourages joint fusion. iFuse-3D is a second‑generation 3D-printed implant that is very similar to the original iFuse implant. The company said that the primary difference between the 2 implants was in the manufacturing process. Typically, 3 implants are used per joint, depending on the size of the pelvis. Implanting iFuse is a technically challenging procedure for which surgeons need specific training (provided at no additional cost by the company). [2022]