The boundary of the vastus medialis oblique and the vastus medialis longus

Abstract

There are no well-defined or documented boundaries for either the vastus medialis oblique or for the vastus medialis longus. The purpose of this study was to examine anatomically the boundaries of the vastus medialis longus and the vastus medialis oblique. In an embalmed adult cadaver, two vastus medialis muscles were examined by direct visual observation. Our observations indicate that the boundary of the vastus medialis oblique and the vastus medialis longus appears to be the line from the adductor hiatus to the medial rim of the patella. This finding indicates that the vastus medialis oblique and vastus medialis longus may have different functions in the vastus medialis.