The sacrospinous ligament makes which foramen?

The sacrospinous ligament makes which foramen?

• A. Greater sciatic foramen
• B. Lesser sciatic foramen
• C. Foramen ovale
• D. Obturator foramen

Answer: (A)

The sacrospinous ligament runs from the sacrum to the ischial spine and divides the greater sciatic notch into two openings. The part above the ligament forms the greater sciatic foramen, while the part below becomes the lesser sciatic foramen. Because this ligament creates that boundary that defines the greater opening, it is the greater sciatic foramen that is formed by its presence.

The sacrospinous ligament runs from the sacrum to the ischial spine and divides the greater sciatic notch into two openings. The part above the ligament forms the greater sciatic foramen, while the part below becomes the lesser sciatic foramen. Because this ligament creates that boundary that defines the greater opening, it is the greater sciatic foramen that is formed by its presence.