[Secondary reconstruction of the forehead defects].

The forehead is the protective helmet of the brain, if we refer to the etymology of the word calvaria. Destroyed, it must be rebuilt; priority is given to its bone infrastructure, even though we can live without it, as long as the other tissues (skin, muscle, aponeurosis, meninge) are intact. Complex surgical project which will be mentioned when the multiplicity of techniques described demonstrates their imperfection and until now the best restoration of a missing tissue requires its replacement by the same tissue. Invitation to invent a true regenerative surgery.