This is a critical clinical landmark passing through the . In the De Lee station system, this is referred to as "Station 0". At this stage, the fetal head is considered "engaged," meaning the widest part of the head has passed into the true pelvis. Fourth Plane (IV Plano)
: Parallel to the first, passing from the bottom of the pubic bone to the second sacral vertebra. plano hodge
: Identifies if the head is "floating" (Plane I), "fixed" (Plane II), or "engaged" (Plane III). This is a critical clinical landmark passing through the
The term "Plano" can refer to a city in Texas, USA, known as Plano, or it can relate to "plan" or "flat" in various contexts. "Hodge" is a surname of English origin. the fetal head is considered "engaged