Lesser sciatic notch

Bone: Lesser sciatic notch
Right hip bone, external surface, showing greater sciatic notch and lesser sciatic notch, separated by the spine of ischium.
Latin	incisura ischiadica minor
Gray's	subject #57 235

Below the ischial spine is a smaller notch, the lesser sciatic notch; it is smooth, coated in the recent state with cartilage, the surface of which presents two or three ridges corresponding to the subdivisions of the tendon of the Obturator internus, which winds over it.

It is converted into a foramen, the lesser sciatic foramen, by the sacrotuberous and sacrospinous ligaments, and transmits the tendon of the Obturator internus, the nerve which supplies that muscle, and the internal pudendal vessels and nerve.

Pudendal nerve, course and branches, through the lesser sciatic notch

See also

• Lesser sciatic foramen
• Greater sciatic notch

External links

• SUNY Labs 42:os-0112 - The Male Perineum and the Penis: Osteology"
• SUNY Labs 44:st-0726 - "The Male Pelvis: Hip Bone"

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.