The appearance of new social realities has led to the conception and protection of family forms different from those based on legal ties or consanguinity. In this way, mechanisms to protect family structures originated from a factual situation accompanied by ties of affection, solidarity and protection have been developed. In the Colombian case, jurisprudence has developed the concept of "foster family". On the other hand, in the American union the courts have resorted to the doctrines of in loco parentis and equitable adoption.