Figure 2

PEDI procedure. Two portal working sheaths were used for percutaneous endoscopic debridement followed by dilute betadine solution irrigation (PEDI) for treating patients with lumbar infectious spondylitis (A). A negative-pressure Hemovac with 2 drainage tubes was inserted through the sheaths for further continuous drainage of the offending pathogens (B). Informed consent was obtained from the patient for his image to be published in this study.