2019年9月28日 · The cog is a coronally oriented bony process in the middle ear cavity of the temporal bone that projects from the tegmen tympani, separating the anterior epitympanic …

The cog is a bony septum that detaches from the tegmen tympani cranially, heading vertically toward the cochleariform process, in front of the malleus head. W. House was the first to …

The AER is separated from the epitympanum proper by a bone plate which is suspended from the anterior petrosal segment called “cog”. It is a bony projection from the tegmen tympani. Cog …

Imaging evaluation of the ear and temporal bone is primarily accomplished by computed tomography (CT) or magnetic resonance imaging (MRI). Each modality has its strengths and …

2021年1月26日 · Transcanal and transmastoid approaches were performed to visualize the middle ear spaces. We could demonstrate Cog, a ridge of bone that extends inferiorly from the …

Based on endoscopic anatomy and the temporal bone spiral CT 3-D structure reconstruction of the epitympanum, the attic, and the adjacent structures, we found an extension of the clinical …

2008年1月11日 · An opacified middle ear is a common finding on imaging studies of the temporal bone. Apart from glomus tympanicum, congenital cholesteatoma, vascular anomalies or …

cog and the tensor fold. In most people, the demarcation between the anterior and posterior epitympanum is represented by the transverse ridge or cog. The cog is a bony septum that …

Background: Anterior epitympanic recess (AER) is a small anatomical space in the epitympanum anterior to level of the head of malleus. This space has received lot of attention because of its …

The cog is a bony projection from the tegmen which descends in the attic and terminates just anterior to the head of the malleus (Sanna et al. 2006). The cog divides the epitympanum into …