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With the trend of minimally invasive spine surgery, full-endoscopic lumbar discectomy (FELD) has evolved with the advancement of the optics and instruments. Regarding the techniques, the transforaminal and interlaminar approach remain the major accesses in FELD. Transforaminal endoscopic lumbar discectomy (TELD) is an effective and safe treatment for herniation of the lumbar disc. More and more evidence supports the TELD in enhancing recovery and decreasing surgical complications. However, the learning curve of TELD remains steep, especially at the L5-S1 level. The iliac crest height is an essential factor in the operability of TELD at the L5-S1 level. In the situation of the high iliac crest, TELD is technically challenging even for an experienced surgeon. Therefore, the authors report their techniques of TELD with foraminoplasty step-by-step and the preliminary results in this report.

Transforaminal Endoscopic Lumbar Discectomy for L5–S1 Disc Herniation With High Iliac Crest: Technical Note and Preliminary Series