1. International Journal of Surgery
Comparison of percutaneous endoscopic lumbar discectomy versus open lumbar microdiscectomy for lumbar disc herniation: A meta-analysis 
Wenfeng Ruan, Fan Feng, Zhengye Liu, Jiangtao Xie, Lin Cai, Ansong Ping 
International Journal of Surgery 
Volume 31, Pages (July 2016)
DOI: /j.ijsu
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

2. Fig. 1
Search strategy.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

3. Fig. 2
Forest plot: weighted mean difference (WMD) in preoperative VAS-BP score and 95% CI for PLED versus OLM of lumbar disc herniation. No significant difference was found between the two groups.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

4. Fig. 3
Forest plot: weighted mean difference (WMD) in postoperative VAS-BP score and 95% CI for PELD versus OLM of lumbar disc herniation. No significant difference was found between the two groups.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

5. Fig. 4
Forest plot: weighted mean difference (WMD) in postoperative ODI and 95% CI for PELD versus OLM of lumbar disc herniation. No significant difference was found between the two groups.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

6. Fig. 5
Forest plot: odds ratio (OR) in complication rate and 95% CI for PELD versus OLM of lumbar disc herniation. No significant difference was found between the two groups.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

7. Fig. 6
Forest plot: odds ratio (OR) in reoperation rate and 95% CI for PELD versus OLM of lumbar disc herniation. No significant difference was found between the two groups.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

8. Fig. 7
Weighted mean difference (WMD) in operation time and 95% CI for PELD versus OLM of lumbar disc herniation. It is significantly higher in the OLM surgery group compared with the PELD surgery group.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

9. Fig. 8
Weighted mean difference (WMD) in hospital stay and 95% CI for PELD versus OLM of lumbar disc herniation. It is significantly higher in the OLM surgery group compared with the PELD surgery group.
International Journal of Surgery  , 86-92DOI: ( /j.ijsu )
Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions