Cochlea: forms and philosophy.

The relationship between the general form of the cochlea and its function is difficult to study. The logarithmic nature of the spiroid can be deduced from embryologic data and the development of the cochlea around a nervous system. The propagation of sound has been studied through linear models. Experiments in fluid mechanics show that the parameters of viscosity and surface tension can modify the surface pattern. These data could permit the conception of 3D-models to explain cochlear cybernetics uniting maximal efficiency with a minimal volume.

[ENT aspects of leprosy. Observations on the physiopathology]. / Aspects O.R.L. de la lèpre. Quelques réflexions d'ordre physiopathologique.

Beginning leprosy detected by careful ENT examination is described. Transmission by nasal droplets appears to be the most plausible theory. Spread of infection from the nose to the facial nerve through the vidian nerve is a personal hypothesis.

[Endonasal microsurgery. Anatomical basis, physiopathological justification, attempt at codification of the interventions]. / La micro-chirurgie endonasale. Bases anatomiques, justifications physiopathologiques, essai de codification des interventions.

This report about endonasal microsurgery has two sections: the first one deals with anatomy and the structure of nasal cavities, the methods as well as the technical and technological means required for the different types of surgery. The second section deals with nasal pathology in general and the new possibility of endonasal treatment. Endonasal surgery is not recent but the introduction of the use of the operating microscope gives such a precision in conception and realisation as to open new vistas concerning pathology and the corresponding treatment of nasal diseases. This is what we tried to demonstrate.

[Vidian nerve: perspectives and realities]. / Nerf vidien: perspectives et réalités.

The author presents the history and the actual indications of vidian neurectomy with results out the literature. The endonasal approach of pterygo-palatine fossa is discussed. What is the place of vidian neurectomy in the management and treatment of hypertrophic rhinitis? The question is open but the nasal functional microsurgery is born.