GRADE profile for the quality of evidence related to the assessment for Lumbar Spine using BMPs and ICBG.

1seven studies with a high risk of bias;2Asymmetry in funnel plot;3less than 75% of the studies present data that can be included in a meta-analysis;4five studies with a high risk of bias;5RR = 0.56;6I2 = 79%;7I2 = 77%;8I2 = 70%;9one study including more than 50% patients has a high risk of bias;10I2 = 70%;11only two studies including total 50 patients present data that can be included in a meta-analysis.