Confluence of sinuses

A.Prof Frank Gaillard et al.

The confluence of sinuses, also known as the torcula or torcular Herophili is the site of the confluence of:

The anatomy is highly variable and three types can be distinguished:

  • type 1: superior sagittal sinus drains into one lateral sinus and the straight sinus into the other, with no connection between the two
  • type 2: superior sagittal sinuses and the straight sinus fork, and the forks from both sinuses join to form the lateral sinuses
  • type 3: a true confluence of sinuses

History and etymology

Torcular Herophili originates from the Latin torcula meaning press and Herophili after the Greek anatomist and surgeon Herophilus (c. 300 BC).

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Article information

rID: 5056
Section: Anatomy
Synonyms or Alternate Spellings:
  • torcular Herophili
  • Torcula

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Cases and figures

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    Fig 1: angiogram - annotated
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