The mechanics of lateral curvature : first paper the mechanical tendencies of posture in the normal / Henry O. Feiss.

  • Feiss, Henry O.
Date:
1906?]
Catalogue details

Licence: Public Domain Mark

Credit: The mechanics of lateral curvature : first paper the mechanical tendencies of posture in the normal / Henry O. Feiss. Source: Wellcome Collection.

    3/36
    | ee, rr 4 Hoe MECHANICS OF LATERAL CURVATURE. First Paper: The Mechanical Tendencies of Posture in the Normal. HENRY O. FEISS, M.D., CLEVELAND. In this report we are investigating the laws of the tendencies resulting from postural attitudes, the work being a preliminary part of a study of the mechanics. of lateral curvature. (The investigation of the mechanical relation of normal posture to scoliosis has very recently been advanced by Dr. Lovett and it is from this work that we get the clew to further study.) SEGMENTATION AND BALANCE. In all erect attitudes some effort is necessary to enable a person to stand alone and this effort is afforded by muscular power, but there are certain positions in which the muscular power may be reduced to a minimum and these are obtained by distributing the weight uniformly about a perpendicular line which passes through the center of gravity. (Parow, Horner.) The body is, however, not a firm mass but consists of segments jointed together, one segment resting upon the other. ‘To prevent the body from collapsing connection between segments must be rendered firm. This is done by tightening the tube of tissues connecting superimposed ones. Then to maintain the erect attitude the line of gravity must pass through the base of support. So in all postures in which balance is maintained there is a con- stant equilibration by means of shifting segments. (Rimmer, Herman.) But whether for the sake of balance or not, the result of this segmental movement must mean that the tube of soft parts made
    No text description is available for this image
    No text description is available for this image
    No text description is available for this image