From: Therapeutic effect of autologous bone grafting with adjuvant bone morphogenetic protein on long bone nonunion: a systematic review and meta-analysis
Study
Selection of cohorts
Comparability of cohorts
Assessment of outcome
Total score
Takemoto [10]
☆☆☆
☆
7
Von Ruden(a) [11]
☆☆☆☆
☆☆
9
VonRuden(b) [12]
Hackl [13]
Liu [14]
6