Fig. 7
From: Full-endoscopic foraminoplasty for highly down-migrated lumbar disc herniation
a, b Preoperative sagittal and (c) axial T2 MRI showing a very highly down-migrated disc from L4 to L5. d, e Postoperative sagittal and (f) axial T2 MRI showing successful surgical removal of the downward migrated fragments