[1] [1] RENNIE L, COURT-BROWN C M, MOK J Y Q, et al. The epidemiology of fractures in children[J]. Injury, 2007, 38(8): 913-922.

[2] [2] CHEN W, LV H, LIU S, et al. National incidence of traumatic fractures in China: a retrospective survey of 512 187 individuals[J]. Lancet Glob Health, 2017, 5(8): e807-e817.

[3] [3] HEDSTRM E M, SVENSSON O, BERGSTRM U, et al. Epidemiology of fractures in children and adolescents[J]. Acta Orthop, 2010, 81(1): 148-153.

[4] [4] RYAN L M, TEACH S J, SEARCY K, et al. Epidemiology of pediatric forearm fractures in Washington, DC[J]. J Trauma, 2010, 69(4Suppl): S200-S205.

[6] [6] PACIFIC W. COVID-19 weekly epidemiological update[J]. Americas, 2023, 1(129): 929.

[7] [7] COVID-19 Excess Mortality Collaborators. Estimating excess mortality due to the COVID-19 pandemic: a systematic analysis of COVID-19-related mortality, 2020-21[J]. Lancet, 2022, 399(10334): 1513-1536.

[8] [8] TRENTINI F, MARZIANO V, GUZZETTA G, et al. Pressure on the health-care system and intensive care utilization during the COVID-19 outbreak in the Lombardy Region of Italy: a retrospective observational study in 43, 538 hospitalized patients[J]. Am J Epidemiol, 2022, 191(1): 137-146.

[9] [9] ZACAY G, MODAN-MOSES D, TRIPTO-SHKOLNIK L, et al. Decreases in pediatric fractures during the COVID-19 pandemic-a nationwide epidemiological cohort study[J]. Eur J Pediatr, 2022, 181(4): 1473-1480.

[10] [10] BUTLER L R, ABBOTT E, MENGSTEAB P, et al. Epidemiology of pediatric trauma and fractures during and beyond the COVID-19 pandemic[J]. J Child Orthop, 2023, 17(4): 322-331.

[11] [11] OLECH J, CISZEWSKI M, MORASIEWICZ P. Epidemiology of distal radius fractures in children and adults during the COVID-19 pandemic-a two-center study[J]. BMC Musculoskelet Disord, 2021, 22(1): 306.

[12] [12] LI J, YUAN X, CAO Y, et al. The effects of home confinement on pediatric fractures during the COVID 19 outbreak[J]. Ital J Pediatr, 2021, 47(1): 142.

[13] [13] MARKIEWITZ N D, GARCIA-MUNOZ J, LILLEY B M, et al. Epidemiologic changes in pediatric fractures presenting to emergency departments during the COVID-19 pandemic[J]. J Pediatr Orthop, 2022, 42(8): e815-e820.

[14] [14] LODER R T, JOHNSON B A. Changes in pediatric fracture patterns presenting to US emergency departments before, during, and after the COVID-19 pandemic[J]. Heliyon, 2023, 9(11): e20953.

[15] [15] MUHAMMAD H, MAGETSARI R, RUKMOYO T, et al. Impacts of COVID-19 pandemic on pediatric fractures: a 4-year evaluation of epidemiology and delayed treatment from prepandemic to pandemic period at a tertiary referral hospital[J]. Ann Med Surg (Lond), 2023, 85(9): 4300-4306.

[16] [16] TURGUT A, ARLI H, ALTUNDA , et al. Effect of COVID-19 pandemic on the fracture demographics: data from a tertiary care hospital in Turkey[J]. Acta Orthop Traumatol Turc, 2020, 54(4): 355-363.