关键词: 婴幼儿, 足部生长发育, 足长, 足宽, 足宽长比, 足弓指数

Abstract: Objective To measure and analyze foot development indicators of children under 3 years old, in order to provide basis for the correct clinical assessment of children foot development. Methods A total of 5 894 children under 3 years old who took physical examination in the Child Health Care Department of Xi'an People's Hospital from August 2022 to March 2023 were randomly selected. Foot length, foot width, the ratio of foot width to length and arch index were measured by image processing system, and were compared among different age groups and sex groups. Results 1) Foot length, foot width and arch index of children under 3 years old increased significantly with age, while the ratio of foot width to length decreased significantly with age(F=1 345.23, 396.21,184.65, 287.03, P＜0.05). 2) There was no statistical significance in foot length, foot width and arch index between left and right foot of children under 3 years old(P＞0.05). 3) Foot length and foot width of boys were greater than those of girls in all age groups, and the difference was statistically significant(t_{foot length}:3.45 - 10.19,t_{foot width}: 3.77 - 9.21, P＜0.05). There was no significant difference in arch index between boys and girls in all age groups(P＞0.05). Conclusion Foot shape of children under 3 years old changes with age, there are differences in foot length and width between boys and girls.

Key words: infants and toddlers, foot development, foot length, foot width, the ratio of foot width to length, arch index