Interobserver reliability of Pirani and Dimeglio scores in the clinical evaluation of idiopathic congenital clubfoot

Background: Dimeglio (DimS) and Pirani (PirS) scores are the most common scores used in congenital talipes equinovarus (CTEV) clinical practice. The aim of this study was to evaluate the interobserver reliability of these scores and how clinical practice can influence the clinical outcome of clubfoot through the DimS and Pirs. Methods: Fifty-four feet were assessed by six trained independent observers through the DimS and PirS: Three consultants (OS), and three residents (RS) divided into three pediatric orthopaedic surgeons (PeO) and three non-pediatric orthopaedic surgeons (NPeO). Results: The PirS and DimS Scores were strongly correlated. In the same way, OS and RS, PirS, and DimS scores were strongly correlated, and the interobserver reliability ranked “good” in the comparison between PeO and NPeO. In fully trained paediatric orthopaedic surgeons, an “excellent” interobserver reliability was found but was only “good” in the NPeO cohort. Conclusions: In conclusion, after careful preparation, at least six months of observation of children with CTEV, PirS and DimS proved to be valid in terms of clinical evaluation. However, more experience with CTEV leads to a better clinical evaluation.