This is a presentation midway between face and vertex and is diagnosed on feeling the orbital ridges on vaginal examination. It occurs approximately once in 1000 deliveries.
This presentation cannot be delivered - the diameter is too large (13.5 cm on average). The position can be corrected, either by flexing to vertex or extending to face. The other alternative is caesarian section.
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page