This last month has brought a number of positive developments for SI joint fusion. The SImmetry System received 510(k) clearance to be preformed as either a single or two incision procedure, a new peer-reviewed article reinforcing the importance of decortication in SI joint fusion was released, and a new study on the prevalence of SI joint degeneration was published. I expect you’ll find the updates below interesting. Please don’t hesitate to reach out with any questions or comments you may have.
Surgical Science Paper Features Case for Decortication in Sacroiliac Joint Fusion
Low back pain (LBP) is one of the most prevalent, disabling and costly medical conditions affecting modern society. LBP presents a significant challenge to effective treatment due to often multifactorial or unknown etiology. Since the 1980s, the sacroiliac (SI) joint has become increasingly recognized as a common source of LBP. In contrast to other sources of LBP, such as internal disc disruption and even psychosocial factors, SI joint pain and degeneration is reliably identified with provocative manual tests and diagnostic injections. Fusion of the SI joint has been shown to provide enduring symptom relief, and minimally invasive techniques developed over the past decade have further reduced the operative risks associated with open fusion surgery. Minimally invasive SI joint fusion surgeries are typically performed by placing rigid implant components across the joint space. The implants provide mechanical fixation while bony fusion develops. Decortication of the SI joint space during the procedure produces a bleeding bone surface that allows for increased availability of autologous mesenchymal stem cells and growth factors at the fusion site. Coupled with the mechanical stability provided by the implant and autologous bone graft, decortication provides an optimal environment for bone growth and subsequent fusion of the joint. This report describes the background of SI joint disease, treatment, and the minimally invasive SImmetry® Sacroiliac Joint Fusion System (Zyga Technology, Inc., Minnetonka, MN, USA), with emphasis on the decortication instrumentation and procedure.
Recent Study Uncovers Widespread SI Joint Degeneration
New research from Stanford University and Bellevue Bone and Joint Physicians in Washington has established that sacroiliac (SI) joint degeneration is highly prevalent in the asymptomatic population. CT scans taken of 373 skeletally mature patients with the average age of 57 and no prior history of low back or pelvic pain determined the “…overall prevalence of SI joint degeneration in at least one joint was 65%”, according to Jonathan-James Eno, M.D., an orthopedic resident at Stanford. In addition, almost 31% of the patient cohort showed significant degeneration (type 2/3) in the joint.
The study reinforces the point that although radiographic findings may be helpful in determining cause of clinical symptoms, further investigation is needed to confirm SI joint diagnosis.
510(k) Clearance for SImmetry System Updates
Zyga has received 510(k) clearance to market the SImmetry System using either a two-incision or single-incision procedure. Now, surgeons have more options to adapt the surgery to each patient’s individual anatomy and condition. To learn more about the SImmetry System updates, click here.
SI Joint Pain Conference | Aug 21 | Chicago
Orthopaedic Trauma Association (OTA) Annual Meeting | Oct 8-10 | San Diego
California Academy of Physician Assistants (CAPA) Annual Meeting | Oct 9-11 | Palm Springs
North American Spine Society (NASS) Annual Meeting | Oct 14-17 | Chicago
Society for Minimally Invasive Spine Surgery (SMISS) Annual Meeting | Nov 5-7 | Las Vegas
Not able to make it to these events? Zyga offers customized training around the United States.
There are many systems on the market to treat SI joint dysfunction. Listen as Dr. Thaiyananthan shares his perspective on why he believes the SImmetry System offers the best available treatment.
Dr. DennisCrandall explains how the SImmetry Joint Fusion Procedure differs from other SI joint fusion technologies on the market.