A 22-year-old victim of an automobile accident has received destructive damage to structures that form the boundary of the perineum. Which of the following structures is spared?
(A) Pubic arcuate ligament
(B) Tip of the coccyx
© Ischial tuberosities
(D) Sacrospinous ligament
(E) Sacrotuberous ligament
. The answer is D. The sacrospinous ligament forms a boundary of the lesser sciatic
foramen. The pubic arcuate ligament, tip of the coccyx, ischial tuberosities, and sacrotuberous
ligament all form part of the boundary of the perineum.