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Electromyocartographic analysis of the extension of the leg in different positions has shown that: - on the whole energy developped by all superficial muscles of the thigh is more important in the position of dorsal decubitus than in a seated position; - functionnal activity of the rectus femoris muscle varies according to different subjects. Its activity… (More)
Analysis of the functions of the muscles of the inferior and posterior regions of the trunk was carried out by electromyocartography for the basic movements of extension of the trunk in ventral decubitus. For a given subject, the results varied little with time. By contrast, the results were substantially the same from subject to subject in the case of only… (More)
It is conventional saying that the fetal rachis shows only one ventral concavity. An echographic study allowed to observe in utero the rachis of more than a hundred live fetuses. The radius of this curvature gradually increases according to the development, revealed by the disappearance of the cervical curvature under the influence of the weight of the head… (More)
Using anatomical landmarks as fixed points, the authors have squared the cutaneous surface ot the leg into areas which cover the following superficial muscles: m. gastrocnemius, caput mediales et caput laterales, m. peroneus longus, m. tibialis anterior, m. soleus. The electrical surface activity, collected in these areas for some segmented movements… (More)
By an ultrasonic technique (B. scan), the authors have analysed dynamically, the wrist during pronation. They could show that when the elbow is bended at 90 degrees, the distal tip of the radius effects a circular movement of great radius but low grade value, while the ulna draws in the opposite direction a nearly complete small circle.