Birth canal issues can make delivery dangerous for mothers and their unborn children. A doctor should be able to check in advance to see if your child will be at risk of birth canal issues.
Some factors that weigh into these complications include noting the size of the baby, the position of the baby and the size of the baby's head. These are all normal complications of births, so they should be something your doctor monitors you for.
Here's an example. If your child is in breech position, it may be harder to deliver him or her through the birth canal. Babies are meant to come out face down and head first, which makes it easier for them to pass through the canal without getting caught. If your child doesn't turn before birth, your doctor may need to turn him or her manually or give you the option of a Cesarean section.
If your baby is larger than usual, he or she may have trouble passing through the birth canal. For children who are too large or for women who don't dilate large enough to pass the child safely, a C-section is most likely to be suggested. If your baby has an unusually large head, that can be another problem that results in doctors suggesting a C-section.
Most of these issues can be diagnosed ahead of time, but some may not be recognized until labor begins. At that point, the doctor should be looking for labor to progress; if it doesn't, he or she should step in to help. If your child is delivered too late and suffers injuries because of these conditions going unidentified, then you or your child may be in a position to file a claim.
Source: Healthline, "Difficult Labor: Birth Canal Issues," Rachel Nall, accessed Aug. 17, 2016