Sigmoid plate

Last revised by Francis Deng on 16 Jul 2019

The sigmoid plate is variously described as the plate of bone between the jugular bulb and the middle ear cavity (as shown in first image) or more generally as the thin bone separating the sigmoid sinus from adjacent structures (especially mastoid air cells). In the case of the former, the structure is also referred to more specifically as the jugular wall, jugular floorjugular plate, or paries jugularis1-3. In the case of the latter, the structure is also referred to as the sigmoid sinus plate 4.

Related pathology

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Cases and figures

  • Figure 1: sigmoid plate
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