Fig. 1

Effects of QCN on the motor function recovery at week 8 post-avulsion. A Chemical structure of quercetin (QCN). B Schematic diagram showing spinal root avulsion-reimplantation surgical procedures. (1) Normal anatomic construction of C5-C7 spinal cord segments; (2) Avulsion of right C5-7 ventral and dorsal roots; (3) Reimplantation of C6 to the ventral surface of the corresponding spinal segment. C Schematic scoring systems of the Terzis grooming test (TGT). D The average body weights of rats in different experimental groups. E The average TGT scores of rats in different experimental groups. Data are expressed as the mean ± SEM (n = 10). ^##p < 0.01 and ^### p < 0.001 vs the sham group; *p < 0.05 and **p < 0.01 vs the vehicle group