Fig. 3From: Microscopic extra-laminar sequestrectomy (MELS) for the treatment of hidden zone lumbar disc herniation: report of the surgical technique, patient selection, and clinical outcomesa, b The preoperative MRI showed the migrated fragments were obviously linked with the inferior disc. c The intervertebral space can also be approached after removing a small part of the IAP (white arrow: exiting nerve root; black arrow: posterior wall of vertebral body; yellow arrow: intervertebral space)Back to article page