Deleterious effects of the prone position in the full-term infant throughout the first year of life

Summary Seventy-one first-born infants who had been nursed in prone position since birth, were referred for motor assessment at 3 months, 5 months and 9 months. All infants were administered the same checklist of motor items, based on the Amiel-Tison Infant Neurological Evaluation and on the Brunet-Lézine Developmental Psychomotor Scale. Abnormalities in muscular shortening and delay in motor skills were found. These findings are critical as regards environmental influences on postural development, continuities in motor development and issues of early primary prevention. Early identification and follow-up programmes, including frequent changes in posture, are suggested in order to avoid abnormalities of motor behaviour and subsequently in postural patterns.