The aim of th study is to evaluate patients who have been operated for congenital syndactylies. The surgical technique has evolved, and the donnor site for the total skin graft is not the same than 10 years ago. Furthermore, the investigators want to evaluate the function of the hand and the evolution of the operated web space. The patient is examined in consultation by the same doctor, the investigator list complications and evolution of the hand. the investigators also ask the patient and his parents about the satisfaction of the surgery.