[Psychoanalytic approach to family therapy].

Looking at the psychoanalysis and systemic point of view like different and opposed theories seems to be erroneous. On the basis of a clinical example, the author shows that those are the two sides of the same reality: psychic reality. A so-called "metapsychoanalitic approach" leads to discuss the points of dynamic links between interactions, unconscious desires and ideas, influence of playing on secondary fantasies moulding. An hypothesis is raised about the possible reformulation of Freud's psychic trauma theory in terms of family homeostasis. Dynamic links between transfer and interpretation are outlined.