Objective To study the early motor development of children with William syndrome (WS). Methods The medical data of 59 children with WS (40 males and 19 females) aged 0-24 months from September 2018 to August 2021 were retrospectively analyzed. Based on the test results of the Peabody Developmental Motor Scale II, the motor development ability of the children of different ages was analyzed. Results There was no significant difference in age and motor quotient between boys and girls (P>0.05). For the age groups of <6 months, 6 to <12 months, 12 to <18 months, and 18 to 24 months, the gross-motor quotients were 94±5, 78±11, 71±8, and 63±8, respectively, and the fine-motor quotients were 94±5, 80±10, 74±9, and 65±9, respectively. Both the gross- and fine-motor quotients significantly decreased with age (P<0.05). For the above age groups, the rates of gross-motor abnormalities were 0%, 53%, 87%, and 93%, respectively, and the rates of fine-motor development abnormalities were 0%, 47%, 67%, and 93%, respectively. The rates of gross- and fine-motor development abnormalities increased significantly with age (P<0.05). Conclusions Children with WS have no obvious motor delays within 6 months of age, but present with decreasing motor ability and an increasing incidence of motor delays with age. Therefore, it is necessary to follow up their motor abilities and provide early intervention to decrease the incidence of motor developmental delays.
Key words
Williams syndrome /
Peabody Developmental Motor Scale II /
Motor development /
Child
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