Fossula post fenestram and Fissula ante fenestram

In the Otic Capsule

Introduction

The fossula post fenestram is a sac-like evagination of connective tissue within the otic capsule just posterior to the oval window. The fissula ante fenestram plural Fissula ante fenestras is a small connective tissue-filled cleft in the otic capsule of the temporal bone not. In 8090 of otospongiosis a focus is found just in front of the oval window at the fissula depression ante fenestram the most common site of. Illustration of the perilymphatic labyrinthine space the fissula ante fenestram label underlined and fossula post fenestram adapted. A fossula post fenestram occurs in the specimen It possesses a distinct vestibular extremity fig 17 and a less prominent tympanic opening.