pelvic wall

android, gynecoid, anthropoid, platypelloid

obturator internus, tendinous arch, obturator canal

iliococcygeus, pubococcygeus, puborectalis

coccygeus, anococcygeal, coccygeus

anatomical, obstetric, diagonal conjugate

function of sacrotuberous and sacrospinous ligaments

prevent upward tilting of sacrum

what passes through greater sciatic foramen (above pisiformis)

superior gluteal nerve and vessels

below pisiformis

sciatic nerve, inferior gluteal, posterior femoral cutaneous, quadratus femoris nerves and vessels

lesser sciatic foramen

pudendal nerve and internal pudendal vessels and nerve to obturator internus

2 muscles of pelvic diaphragm

levator ani and coccygeus

nerve supply to coccygeus

S4 and 5

nerve supply to levator ani

s4, inferior rectal nerve or perineal branch of pudendal nerve

superior and inferior gluteal artery

internal pudendal

umbilical, obturator, superior vesical, inferior vesical