Confluence of sinuses

Last revised by Dr Zemar Vajuhudeen on 07 Jun 2021

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 sinus 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 "torcular" meaning "wine press" and "herophili" after the Ancient Greek anatomist and surgeon Herophilos (c. 330 BC - c. 260 BC) 3

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Cases and figures

  • Fig 1: angiogram - annotated
    Drag here to reorder.