Magnetic resonance images before surgery. Magnetic resonance images before surgery. The left panel shows a right parasagittal view, and the right panel shows an oblique axial view of L5. Arrows indicate a far-lateral herniated nucleus pulposus on the right side at the level of L5-S1. KAZUTA YAMASHITA et al. Int J Spine Surg 2018;12:624-628 ©International Society for the Advancement of Spine Surgery Copyright © 2018 ISASS - This manuscript is generously published free of charge by ISASS, the International Society for the Advancement of Spine Surgery