ObjectiveTo systematically evaluate the clinical efficacy of percutaneous transforaminal endoscopic discectomy（PTED） and open surgery（OS）for treating lumbar spinal stenosis(LSS). MethodsThe databases of computer retrieval from establishment to July 2017 included Cochrane library, PubMed, Medline, CNKI, VIP and Wanfang Database. Manual retrieval was also conducted. Random control trials(RCTs) about PTED and OS for treating LSS were collected. The literatures were screened according to inclusion criteria and exclusion criteria, then quality assessment and data extraction were performed. Meta analysis for each indicator by RevMan 5.3 software. ResultsEight RCTs consisting of 770 subjects were enrolled eventually. PTED group and OS group consisted of 389 patients and 381 patients respectively. The results showed that there were significant differences in the operative duration, blood loss, hospital stay, postoperative VAS scores and Oswestry disability index between the PTED group and OS group (P＜0.05) . ConclusionCompared with the OS, PTED for LSS has the advantages of less blood loss and trauma, faster postoperative recovery and good efficacy.

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