Fig. 1

Illustration of scar appearance of typical patients in the experimental and control group. In the 3rd month, scar condition was similar between the experimental and control groups. In the 6th month, the control group showed higher hypertrophic levels, which were then reduced in the 12th month. In the experimental group, scar appearance was similar at each follow-up time. Compared to the control group, the scar from the experimental group is inapparent.