Landmark for pudendal nerve block is ? Ischial tuberosity

Landmark for pudendal nerve block is ?
a) Ischial tuberosity
b) Iliac spine
c) Sacroiliac joint
d) None of the above
Correct Answer - A
Ans. A. Ischial tuberosity
Pudendal block:
When performing a transvaginal pudendal nerve block, the ischial
spine is the palpated through the wall of the vagina and the needle is
then passed through the vaginal mucous membrane toward the
ischial spine.
In a perineal pudendal nerve block, the ischial tuberosity is palpated
through the buttock and the needle is inserted into the pude