Case 1. Diagnosis: Stapes Fixation. The normal stapes is demonstrated on the right. The left stapes shows a narrowed distance between the cura. There is also an abnormal band of tissue extending from the pyramidal eminence to the stapes (arrow). The stapes is an important and very difficult structure to evaluate in children with suspected congenital conductive hearing loss. There may be only a single crus (monopod) or accessory crura (double stapes). Increased bone within the oval window as well as increased density of the cura may suggest a diagnosis of stapedial fixation. In this case the fixating band may represent a bar or thickened, sometimes ossified stapedial tendon.