Objective To investigate the effects of spinal endoscopic BEIS technique in the treatment of senile lumbar spinal stenosis.

Methods Eighty elderly patients with lumbar spinal stenosis were divided into the observation group (45 cases) and control group (35 cases) according to different surgeries. The observation group were treated with the BEIS technique of spinal endoscopy through intervertebral foramen approach, and the control group were treated with traditional surgery. The size of the surgical incision, surgical time, intraoperative blood loss, hospitalization time and time out of bed after operation were compared between two groups. The visual analogue scale (VAS) and dysfunction index (ODI) of lower back pain and lower limb pain in two groups were compared between before and after operation.

Results Compared with the control group, the surgical incision was small, the operation time, time out of bed after surgery and hospitalization time were shorter, and the intraoperative blood loss was less in the observation group (P ＜ 0.05). There was no statistical significance in the preoperative VAS score and ODI index between two groups (P ＞ 0.05). The VAS score and ODI index in two groups at all time points after operation were lower than those before surgery (P ＜ 0.05), and the VAS score and ODI index in the observation group were significantly lower than those in control group at 1 and 3 months after surgery (P ＜ 0.01).

Conclusions The BEIS technique of spinal endoscopy in the treatment of lumbar spinal stenosis in the elderly is less trauma, faster recovery, higher safety, and good therapeutic efficacy.