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Elements of a general theory of joints. 4. Coupled joints as simple gear systems
D Kubein-Meesenburg1, H Nägerl, J Fanghänel
1Department of Orthodontics, Institut of Physics Georg August University Göttingen, FRG.
Anatomischer Anzeiger
|January 1, 1991
Abstract:
In the present article the relative motion in the horizontal plane of 2 adjacent lumbar vertebrae (axial rotation of the lumbar spine) and the cranial border movement of the mandible parallel to the vertical-sagittal plane are examined. The interplay of joints is depicted onto the function of a gear system with positive drive. The limits of this projection are described.