Abstract
<title>Abstract</title> <p>This paper reports a 40-year-old female patient with 16 years of sacroiliac joint pain. She received multiple conservative treatments including physical therapy, medication and acupuncture-moxibustion yet achieved unsatisfactory symptom relief and was hospitalized. A full preoperative diagnostic evaluation containing MRI and CT scans was completed. A sacroiliac joint block was first performed but only produced partial pain relief. Thereafter, endoscopic-assisted right sacroiliac joint arthrodesis combined with sacroiliac screw internal fixation was conducted. Her pain was substantially relieved postoperatively, with the Visual Analogue Scale (VAS) score falling from 8 preoperatively to 3 at the 2-week follow-up. Postoperative X-ray and CT confirmed satisfactory placement of fusion cages and internal screws. Endoscopic-assisted sacroiliac joint arthrodesis achieved favorable short-term results in this single case, featuring minimal soft tissue trauma, limited intraoperative blood loss and accelerated early recovery. The magnified endoscopic view allows precise dissection and convenient intraoperative hemostasis, and instruments for lumbar endoscopic fusion are compatible with this technique. Nevertheless, novice surgeons may struggle to recognize microscopic anatomical structures given the steep learning curve of this procedure. Rigorous perioperative assessment and continuous monitoring of vital signs and laboratory indices are indispensable. This technique may act as a minimally invasive alternative for carefully selected refractory patients with sacroiliac joint lesions. Accumulated clinical cases and long-term follow-up data are still needed to comprehensively validate its overall efficacy.</p>