Lesser sciatic foramen

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Lesser sciatic foramen
Sobo 1909 210.png
Image of the pelvis showing the lesser sciatic foramen.
Latin Foramen ischiadicum minus
TA A03.6.03.009
FMA 17035
Anatomical terminology

The lesser sciatic foramen is an opening (foramen) between the pelvis and the back of the thigh. The foramen is formed by the sacrotuberous ligament which runs between the sacrum and the ischial tuberosity and the sacrospinous ligament which runs between the sacrum and the ischial spine.


The lesser sciatic foramen has the following boundaries:

Alternatively, the foramen can be defined by the boundaries of the lesser sciatic notch and the two ligaments.


Pudendal nerve and its course through the lesser sciatic foramen.

The following pass through the foramen:

See also[edit]


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links[edit]