Femoral hernias are rare, accounting for ~5% of all hernias.
They are much more common in women than men, probably related to the shape of a woman's pelvis. They are prone to "incarceration": in fact, about half of all people who present with incarcerated femoral hernias were unaware of the hernia
up till that point. Therefore, we recommend repairing all of these, assuming one is fit for surgery.