1. International Journal of Surgery
Interspinous process devices(IPD) alone versus decompression surgery for lumbar spinal stenosis(LSS): A systematic review and meta-analysis of randomized controlled trials 
Xing-wen Zhao, Jian-xiong Ma, Xin-long Ma, Fei Li, Wei-wei He, Xuan Jiang, Yin Wang, Biao Han, Bin Lu 
International Journal of Surgery 
Volume 39, Pages (March 2017)
DOI: /j.ijsu
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2. Fig. 1
Study flow diagram.
International Journal of Surgery  , 57-64DOI: ( /j.ijsu )
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3. Fig. 2
Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
International Journal of Surgery  , 57-64DOI: ( /j.ijsu )
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4. Fig. 3
Risk of bias summary: review authors' judgement about each risk of bias item for each included studies.
International Journal of Surgery  , 57-64DOI: ( /j.ijsu )
Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions

5. Fig. 4 Forest plot of the meta-analysis for hospital stay time.
International Journal of Surgery  , 57-64DOI: ( /j.ijsu )
Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions

6. Fig. 5
Forest plot of the meta-analysis for visual analogue scale (VAS) score for low back pain (A) and leg pain (B) at 2 years.
International Journal of Surgery  , 57-64DOI: ( /j.ijsu )
Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions

7. Fig. 6
Forest plot of the meta-analysis for the incidence of complications (A) and reoperation rates (B).
International Journal of Surgery  , 57-64DOI: ( /j.ijsu )
Copyright © 2017 IJS Publishing Group Ltd Terms and Conditions