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Background Intrigued by the two postulations of Rene Bourdiol, the one on the influence of the helix border on the segmental innervation of the body and the other on the differentiation into an anterior sensory side and a posterior motor side, we looked for further clinical evidence. Aim The aim is to present the elaboration of a chart of the helix border with its segmental indications. Method In a series of two articles we present a clinical body of evidence for the elaboration of the segmental chart of the helix border. This evidence was found by detection of painful points in the ear of patients with different diagnoses. Results We find very intense activity on the helix border over its entire length, going from the bulbar tail to point Zero on the root. The segmental representation follows a proportional and logical distribution in the succession of the segments. Although this study is qualitative in nature, needling is so influential therapeutically that a statistical study would be highly recommended. Conclusion On the basis of clinical evidence, we confirm the postulation of Rene Bourdiol on segmental influence of the helix but propose to extend this action to the entire border of the helix. We find also confirmation for the second postulation of Rene Bourdiol, on the sensory nature of the anterior border and the motor nature of the posterior border. During our investigation however we found also a vascular influence of the cornice (internal hidden border of the helix). On cross section of the helix therefore, we situate three transversal points, cutaneous, motor and vascular, representing the sensory, motor and vascular innervation of the same segmental level. The bulbar thickening of the tail contributes perhaps to a cervical enlargement for the plexus brachialis, but the bulbar tail is much more convincingly identifiable with the medulla oblongata containing the therapeutically interesting spinal trigeminal nucleus and the accessory cuneate nucleus. The localization of the tubercle of Darwin is only present in 10 % of the population. Even when present, the localization of this segmental landmark is too variable and does in my view not represent a lumbosacral enlargement for the innervation of the lower limb as suggested by Bourdiol. |
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