(Some studies, however, find that planned caesarean sections for all breech babies improve outcome. The difference may rest in part on the skill of the doctors who delivered babies in different studies.) Complete breech presentation is the next most favorable position, but these babies sometimes shift and become footling breeches during labour. Footling and kneeling breeches have a higher risk of cord prolapse and head entrapment. Parity – Parity refers to the number of times a woman has given birth before. If a woman has given birth vaginally, her pelvis has "proven" it is big enough to allow a baby of that babys size to pass through it. However, a head-down babys head often molds (shifts its shape to fit the maternal pelvis) and so may present a smaller diameter than the same-size baby born breech. Fetal size in relation to maternal pelvic size – If the mothers pelvis is roomy and the baby is not large, this is favorable for vaginal breech delivery. However, prenatal estimates of the size of the baby and the size of the pelvis are unreliable. Hyperextension of the fetal head – this can be evaluated with ultrasound. Less than 5% of breech babies have their heads in the "star-gazing" position, face looking straight upwards and the back of the head resting against the back of the neck. Caesarean delivery is absolutely necessary, because vaginal birth with the babys head in this position confers a high risk of spinal cord trauma and death.
Creon may refer to:

Greek history
Creon, the first annual eponymous archon of Athens, 682–681 BC

Greek mythology
Creon (king of Thebes), mythological king of Thebes
Creon (king of Corinth), father of Creusa/Glauce in Euripides Medea
Creon, son of Heracles by a daughter of Thespius, king of Thespiae

Medicine
Creon, a brand name of a pancreatic enzymes medication

Places
Créon, a commune in the Gironde department in France
Créon-dArmagnac, a commune in the Landes department in France

Other
Creon a genus of butterfly, in the family Lycaenidae, containing the species Broadtail royal
USS Creon (ARL-11), a World War II U.S. Navy landing craft repair ship

See also
Kreon, a DC Comics character
Kreon, a minifigure (similar to Lego minifigure) from Kre-O construction toys manufactured by Oxford, a Korean company, and marketed by Hasbro