Distraction Interference Arthrodesis of the Sacroiliac Joint

The Implant

The DIANA implant is anchored at the hardest point of the pelvic bone. It ensures that the short distance between the painful joint surfaces restored by surgery is maintained during the healing phase, when the new bone graft material is transformed into solid bone and thus stabilizes the joint.
The tapered titanium implant has self-tapping, hollow threads at the front end, enabling it to be rapidly and securely screwed into the desired position.
The other, wider end has stronger threads and a broader supporting surface (shoulder), preventing the implant from sinking into the softer bone of the sacrum. Along with specially designed instruments, allowance is therefore made for the asymmetrical bone densities between the sacrum and ilium.