Positional plagiocephaly: results of the osteopathic treatment of 424 infants. An observational retrospective cohort study.

• Positional plagiocephaly is increasingly common among infants and may cause moderate to severe neurodevelopmental adverse effects. • Osteopathic treatment may tackle early deformational sequences, in order to ensure the correct development of the child. • Our study reveals that cranial asymmetry of infants with positional plagiocephaly is significantly reduced after only five osteopathic treatments provided in the first months of life. • Osteopathic treatment should be offered as a first line approach to young infants diagnosed with positional plagiocephaly.