A four-year clinical and sonographic longitudinal follow-up of clubfeet treated according to Ponseti with normal references.

Purpose: To follow children with a clubfoot by ultrasonography during the entire treatment period up to 4 years and compare with controls.

Method: Thirty clubfeet in 20 children treated using the Ponseti method and 29 controls were followed by repeated ultrasonography investigations from neonates to the age of 4 years. The previously established coronal medial and lateral, sagittal dorsal and posterior projections were used.