You shouldn't have to live with pain.
SI joint dysfunction can be solved by the minimally invasive SImmetry procedure. If you’ve got SI joint pain, the SImmetry procedure is a chance to stop your pain. Looking for a doctor?
How SImmetry works
How the SImmetry procedure works
SImmetry is SI joint fusion surgery, which means that it uses an implant to do two things:
- Keep your SI joint from moving to give you pain relief right away
- Create a bridge to grow new bone across your SI joint to keep it from moving for the long term.
The SImmetry procedure is different because it makes a true joint fusion in your SI joint. Even though this kind of fusion is the gold standard for spinal surgery, other SI joint fusion surgeries don’t provide it. The SImmetry procedure is the only minimally invasive lateral approach SI joint fusion surgery that meets the standard of true joint fusion.
It works in a three-step process:
Uses your body’s healing to help
SImmetry uses a process called decortication to prepare your hip bones for the implant. Decortication, or removing cartilage, triggers the body’s natural healing response for the next step.
Creates a bridge to grow new bone
Next, bone graft material is put into your joint – this creates a place for your bone to naturally create a bridge that will stabilize your SI joint and prevent pain.
Supports the joint during healing
Finally, screws are placed into the joint to hold it steady while bone grows in. That means you experience pain relief fast, but you’re also set up for long-term pain relief once your body has grown new bone.See How It Works
Surgery & Recovery
What you can expect from the SImmetry surgery (other than pain relief)
Like any surgery, the SImmetry SI Joint Fusion System carries risks, but with a short procedure (an hour or so), a small incision (an inch), and a short hospital stay (1 – 2 days), recovery might surprise you.
Getting ready for surgery
You’ll want to make sure you have someone to drive you home and give you a hand around the house for a day or two. You’ll also want to pack and bring an overnight bag for your stay. Otherwise, your surgeon and hospital will give you instructions about when to stop eating and drinking, when to arrive, and what to bring.
Your surgery will take place under general anesthetic, so you’ll be unconscious during the procedure, which lasts about an hour. You’ll be face down, and the surgeon will make small incisions, about 2 inches long, in each of your buttocks. After prepping the bone and inserting the implants, they’ll close the incisions again.
When you wake up, you’ll probably have some pain or swelling at the incision sites, which ice and pain medication will help (though many patients say that the pain is minimal). Once you’ve recovered enough to go home, you may or may not need to use crutches for a while to keep the weight off your SI joint. You doctor will tell you how soon you can start doing your usual activities again.
Outcomes & Data
59% reduction in pain in twelve months
How does SImmetry surgery stack up?
The SImmetry procedure isn’t the only joint fusion surgery out there. But we believe it offers clear benefits.
Creates bleeding bone, biologically necessary for fusion
Relies on mechanical stabilization alone
|Designed for fusion, right from the start
Decortication is an integral partof the SImmetry System
|Fusion functionality is absent—or optional
Others skip the decortication step, or only offer it as an add-on
|Fixed and fused in place
Threaded implants, combined with fusion, achieve rigidity, essential for pain relief*(1)
Small movements over time may lead to lucency after fixation alone which may lead to unrealized pain*(2)
|Goes the distance
Facilitates osseous bridging all the wayacross the sacroiliac joint*(3)
Lack of CT evidence of bridging bone leaves uncertainty
* Comparison chart taken from www.aofoundation.org
1. Shih et al;  Biomechanical Evaluation of Sacroiliac Joint Fixation with Decortication. The Spine Journal.
2. MenMuir et al; (2017) International Journal of Spine Surgery – Revision of Minimally Invasive Sacroiliac Joint Fixation: Technical consideration and Case Studies Using Decortication and Threaded Implant Fixation 3. Araghi, A. et al, SImmetry Sacroiliac Joint Fusion System – Differentiated Technologies for Your Patients. Think Tank Symposium June, 2019