Proposing the Retrosternal Angle as a Diagnostic Measure for Banana Sternum in Pectus Excavatum

Anteriorly convex sternum in pectus excavatum, also known as banana sternum (BS), influences decision-making during repair and, especially, the need to cross bars. However, the definition of BS remains subjective. Thus, we aim to propose the retrosternal angle (RSA) as a diagnostic measure for the discrimination of BS.