(a) Two‐way analysis of variance shows that there was a statistically significant difference between the TRANSPLANT+PEG group and the TRANSPLANT group (F = 329.8, p < 0.0001), and there were also statistically significant differences across different time points (F = 109.5, p < 0.0001). (b) Through the mixed‐effects analysis of the TRANSECTION+PEG group and the TRANSPLANT+PEG group, the p value and F value of the factor ‘time’ are <0.0001 and 114.6, respectively; thus, time has an impact on the recovery of spinal cord injury. The p value and F value of the factor ‘treatment (TRANSPLANT+PEG group or TRANSECTION+PEG group)’ were 0.6312 and 0.2469, respectively, so there was no significant difference between the TRANSPLANT+PEG group and the TRANSECTION+PEG group