Figure 3From: Surgical treatment of lumbosacral tuberculosis by one-stage debridement and anterior instrumentation with allograft through an extraperitoneal anterior approachCT and MR images showing bone union of grade I. (A) CT image showing S1 bone destruction, presacral cold abscess, and sequestrum. (B) MRI showing L5–S1 vertebral signal change, narrowed intervertebral space, and presacral cold abscess.Back to article page