The ischium situated below the ilium.there is projection of thin three-sided Bony prominence from the posterior border of ischium.which is called ischial spine.it is situated inbetween greater sciatic notch and lesser sciatic notch.
The ischium situated below the ilium.there is projection of thin three-sided Bony prominence from the posterior border of ischium.which is called ischial spine.it is situated inbetween greater sciatic notch and lesser sciatic notch.