Biportal Endoscopic Posterior Open‐Window Focal Debridement and Lavage for Sacroiliac Joint Tuberculosis

Abstract Sacroiliac joint tuberculosis (SJT), although relatively uncommon, may lead to severe destruction and functional impairment of the sacroiliac joint. Surgical intervention is recommended for patients with significant joint destruction, mild cystic changes, or sacroiliac joint instability. Early bone fusion may be facilitated through drainage of purulent fluid, curettage of necrotic tissue, and arthrodesis. Conventional surgery demands extensive osteotomy to create a sufficiently large bone window within the sacroiliac joint cavity for clearing infected tissue. The purpose of this technical note is to describe the details of biportal endoscopic iliac fenestration debridement for the management of sacroiliac tuberculosis.