343 posters, 5 videos, 2 audios, 18 topics, 33 sessions, 263 authors, 202 institutions

24th Annual Pain Medicine Meeting 2025

November 13-15, 2025| JW Marriott Austin, Austin, Texas

2223547

Lateral Transiliac MIS SI Joint Fusion: 1-Year Follow-Up Results from the Prospective Multicenter STACI Trial

View Poster Contact Presenter

Poster Presenter

Taylor Lawson

Authors

Taylor Lawson

Affiliations

SI-Bone

Part of Topic

Scientific Abstracts - Late Breaking > Emerging Technology

Objective: Evaluate outcomes with lateral SIJ fusion when the procedure is performed by IPM physicians

Background: Sacroiliac joint (SIJ) dysfunction is responsible for 15-30% of persistent lower back pain. Minimally invasive SIJ fusion using metallic implants in a lateral transiliac trajectory is supported by significant improvements in pain, disability, and quality-of-life parameters. Historically performed by surgeons, interventional pain management (IPM) physicians are now performing these fusions, though outcomes remain unpublished.

STACI (iFuse TORQ for the treatment of sacroiliac joint dysfunction) (NCT 05870488) is a prospective, multi-center, single-arm clinical trial of lateral SIJ fusion performed by IPM physicians using threaded titanium implants. 110 subjects were enrolled across 15 Interventional Pain Management sites in the US. Herein we present primary and secondary endpoint results.

Eligibility criteria include:

•Confirmed diagnosis of SIJD refractory to 6 months of conservative care

•Baseline ODI > 30% and SIJ pain score >5 on a 10 pt scale.

•No previous SIJ surgeries on index side or recent history of pelvic trauma.

The following data are collected at 1, 3, 6, 12, and 24 months after surgery:

•NRS, ODI, PROMIS-29

•Device or procedure related adverse events

•Opioid use

Conclusion: Lateral SIJ fusion performed by IPM physicians is safe and effective, producing substantial and clinically meaningful improvements in pain and function at one year.