Levator Ani Muscle Complex: Anatomic Findings in Nulliparous Patients at Thin-Section MR Imaging with Double Opacification

Abstract

Numerous morphologic variants of the levator ani muscle complex are noted at coronal thin-section MR imaging with double opacification. Most involve the pubococcygeal muscle on the left side at perineal body and vaginal levels. Whether some of these anatomic findings may favor prolapse after vaginal birth may be questioned.