Petrotympanic fissure

The petrotympanic fissure, also known as the Glaserian fissure or squamotympanic fissure, is a small fissure in the temporal bone which is a medial continuation of the tympanosquamosal suture. It divides the mandibular fossa anteriorly by the articular tubercle and posteriorly by the tympanic part of the temporal bone. It contains anterior tympanic artery and chorda tympani which runs through the fissure into the infratemporal fossa.

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Article information

rID: 46813
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:
  • Glaserian fissure

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Cases and figures

  • Figure 1: petrotympanic fissure (prominent)Petrotympanic fissure (prominent)
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