Sacroiliac Joint Radiofrequency Ablation Procedure And Instrumentation

Description

Sacroiliac joint radiofrequency ablation is centered on the posterior sacroiliac region, where the ilium lies lateral to the sacrum and the joint line runs obliquely between them. Within the single frame, thermal radiofrequency probes are positioned along the dorsal surface of the sacrum near the sacral foramina and along the posterior ilium adjacent to the posterior superior iliac spine, reflecting typical targets of the L5 dorsal ramus and the S1 to S3 lateral branch articular nerves. Probe shafts orient perpendicular to the skin surface, while their active tips align parallel to the joint margin to maximize lesion coverage along the periarticular neural network. Bony landmarks guide everything. Posterior sacroiliac complex pain often presents as buttock-dominant pain with referral to the posterior thigh, and it is frequently addressed after diagnostic blocks suggest a lateral branch-mediated pain generator rather than true intra-articular inflammation. This illustration emphasizes the relationship between the sacral ala, dorsal sacral foramina, and the posterior iliac crest so you can appreciate why probe spacing matters, and why lesions are created in a strip-like pattern lateral to the foramina to avoid entering them. Lighting and surface contrast separate sacrum from ilium cleanly, which helps when teaching the difference between an intra-articular needle path and a periarticular radiofrequency trajectory. Use this illustration in pain medicine and physiatry training modules, fluoroscopy-guided spine intervention atlases, and patient-facing consent materials that need an anatomically grounded explanation of sacroiliac RFA instrumentation and targets. It also suits journal figures discussing technique variants such as conventional versus cooled radiofrequency probe placement along S1 to S3 lateral branches. Anatomical accuracy verified by SciePro's Medical Advisory Board.