Infants with congenital muscular torticollis (CMT) are at risk of delay in achieving their motor milestones. The aim of this study was to investigate if CMT or time in a prone position as an infant had any influence on motor development at preschool age.


A case control study.


Eighty-one children who had participated in a previous study investigating motor development in infants with CMT and a control group of infants without CMT.


A follow-up at the age of 3.5 to 5 years, the Movement Assessment Battery for Children was used with the earlier CMT group and the control group to assess their motor development. An independent physiotherapist, who was blinded of the children’s previous group belonging, assessed the children

Main Outcome Measurements

percentile scores of motor development.


Multiple regression showed no impact on earlier group belonging or the amount of time spent in prone as an infant. The left-handed children had a significantly (p < .01) lower percentile in the Movement ABC.


Neither CMT nor spending limited periods of time in prone when awake as an infant have any significant long-term effects on motor development.

Key words: Motor development, torticollis, preschoolers