Abstract: Objective To explore and analyze the comparative study of surgical efficacy and imaging changes between percutaneous transforaminal endoscopic TESSYS technology and posterior laminectomy for nucleus pulposus. Methods According to different surgical procedures, 90 patients receiving lumbar discectomy admitted to Tai 'an Hospital of Traditional Chinese Medicine from May 2020 to June 2022 were divided into 45 patients in each group. The observation group was given percutaneous transforaminal TESSYS technology, while the control group was given posterior fenestrated laminae nucleus pulposus extraction. The therapeutic effects of the two groups were compared. Results Compared with the control group, the observation group had less intraoperative blood loss, shorter incision length, lower postoperative VAS score, lower nerve root injury rate, lower recurrence rate at 1 year follow-up, and lower incidence of lumbar instability and adjacent segment degeneration after 1 year follow-up, with statistical significance (P<0.05). There was no significant difference in the excellent and good rate of improved Macnab between the two groups (P>0.05). Conclusion The clinical effect of percutaneous lumbar discectomy using TESSYS technology under intervertebral foramen is significant for the treatment of lumbar disc herniation. The incision is small, the damage to surrounding tissues is small, the pain is mild, and the short-term follow-up imaging performance is good, which can promote prognosis.

Key words: percutaneous foraminoscope, TESSYS technology, lumbar discectomy, fenestration via posterior laminae nucleus pulposus