What are the two types of breech presentations?

The two types of breech presentations are indeed frank breech and complete breech. In a frank breech presentation, the fetal legs are extended upwards towards the head, and the buttocks are presenting at the cervix. This is the most common type of breech presentation. In a complete breech presentation, both legs are folded at the knees and the fetus presents with the buttocks down and the knees flexed. This configuration can complicate delivery if it persists close to term.

Options that include transverse lie or shoulder presentation indicate different fetal positioning that are not classified as breech presentations. The transverse lie refers to the fetus lying horizontally across the uterus, which is a different type of presentation entirely, while the footling breech refers specifically to when one or both feet of the fetus are presenting. Lastly, the term "lying position" doesn't accurately refer to a recognized type of breech presentation. Therefore, focusing on frank breech and complete breech provides an accurate understanding of the types of breech presentations relevant in obstetric assessments.