Girish Mahajan (Editor)

Lesser sciatic foramen

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Dorlands /Elsevier
  
f_12/12373178

FMA
  
17035

TA
  
A03.6.03.009

Lesser sciatic foramen

Latin
  
Foramen ischiadicum minus

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.

Contents

Structure

The lesser sciatic foramen has the following boundaries:

  • Anterior: the tuberosity of the ischium
  • Superior: the spine of the ischium and sacrospinous ligament
  • Posterior: the sacrotuberous ligament
  • Alternatively, the foramen can be defined by the boundaries of the lesser sciatic notch and the two ligaments.

    Function

    The following pass through the foramen:

  • the tendon of the Obturator internus
  • internal pudendal vessels
  • pudendal nerve
  • nerve to the obturator internus
  • References

    Lesser sciatic foramen Wikipedia


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