[The chin: a dynamic complex].

The chin can be described as a coherent dynamic whole. The anatomical survey shows its different structures: skin, adipose tissue, platysma muscles, and osseous plane. We are underlining here the essential role for the mobility of the area of a little described anatomical element: the adipose body of the chin. We shall show the anatomical details and the dynamic interest of this structure. The chin obviously remains interconnected with the other dynamic complexes of the face. Thus the anomalies of this area will be analyzed within a coherent dynamic model interdependent from the whole face.