Abstract: Objective To investigate the efficacy of unilateral dual-channel spinal endoscopic technique in the treatment of lumbar spinal stenosis. Methods A retrospective analysis was made of 68 patients with single-segment lumbar spinal stenosis who were treated in our hospital from January 2018 to March 2020.Among them,34 patients were treated with traditional hemilaminectomy and decompression(traditional group),34 patients Unilateral dual-channel spinal endoscopic technique(observation group) was used to compare the clinical efficacy and postoperative rehabilitation of the two groups of patients. Results Intraoperative blood loss [(84.53±13.62)ml],hospital stay [(11.36±3.51)d] and incision length [(8.53±1.53)cm] in the traditional group were significantly greater than those in the observation group[(37.82±10.27)ml,(7.40±2.67)d and (2.31±1.01)cm](P<0.05).The operation time of the observation group [(68.42±11.62)min] was longer than that of the traditional group[(52.27±10.89)min](P<0.05).At 3 months after operation,the JOA score,VAS score and ODI score of the traditional group were(20.24±3.43),(2.64±0.58),(19.54±4.21),respectively,while those of the control group were(22.58±3.61),(2.21±0.46),(16.41±5.11),the JOA score in the traditional group was significantly lower than that in the observation group(P<0.05),and the VAS score and ODI score in the observation group were significantly lower than those in the traditional group(P<0.05).The total incidence of complications in the observation group(11.76%) was slightly lower than that in the traditional group(17.65%)(P>0.05). Conclusion Compared with the traditional hemilaminectomy and decompression,the unilateral dual-channel spinal endoscopic technique for the treatment of lumbar spinal stenosis causes less trauma and better postoperative recovery effect.

Key words: lumbar spinal stenosis, endoscopy, unilateral dual channel, clinical efficacy