The word "fundal" refers to something that is related to the bottom or deepest part of a hollow space or cavity, like the uterus or the eye. Full definition
It has direct links with the gestational age at which the child was born and can be estimated during the pregnancy by measuring fundal height. (sciencedaily.com)
This involves measuring fundal height — the distance between the top of your uterus and your pubic bone. (howtoadult.com)
There is a school of thought that all brachial plexus injuries during birth are avoidable and are the product of either excessive traction on the baby's head by the obstetrician or the use of fundal pressure by labor and delivery nurses which further jams the shoulder into the pubic symphysis in combination with excessive traction. (needleellenberg.com)