The aim of cleft care is to favor a normal socialization of patients with fewer therapeutic coercion. It supposes a full multidisciplinary team including psychologist, speech therapeutic, dental orthopedist, oto-rhino-laryngologist and surgeons. All of them have to be well trained which supposes a sufficient amount of cases: anglo-saxon studies have proven that a mean of at least 20 new cases per year of primary cleft were necessary. With purposes to enhance the effectiveness of treatment: prospective studies and measurements of results must be evaluated with the help of objective criteria. These are the goals of our team in lille. Our surgical principles are those of functional procedures, which privilege the muscle function's repair.