This has usually been regarded as an evidence of intra-uterine fracture, but the observations of Hoffa suggest that both the bend of the bone and the depression on the skin are due to pressure exercised upon the leg from without by an amniotic band or adhesion.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
But he has come into the world with an atrophy, a constriction, caused by amniotic threads.
"Royal Highness"
Thomas Mann
This fluid, called "The Waters" by those who have no special knowledge of anatomy, is technically designated as the amniotic Fluid.
"The Prospective Mother A Handbook for Women During Pregnancy"
J. Morris Slemons