Lateral curvature of the spine and round shoulders . Fig. 21.—Hyperextension in the Cadaver. ^ Zeitsch. fiir orth. chir., 1910, xxvii, p. i. SIDE BENDING ^^ Fig. 31 shows the amount and distribution of these movements as formulatedby him in an average individual. Side bending in lying on the face shows a more evenly distributed lateralcurve than does that in the erect position. The character of the curve does notchange essentially when the shoulders and pelvis are held and the middle of thetrunk pushed to one side. The curve in this position of the spine is greater in the. Fig. 22.—Side Bendin
Lateral curvature of the spine and round shoulders . Fig. 21.—Hyperextension in the Cadaver. ^ Zeitsch. fiir orth. chir., 1910, xxvii, p. i. SIDE BENDING ^^ Fig. 31 shows the amount and distribution of these movements as formulatedby him in an average individual. Side bending in lying on the face shows a more evenly distributed lateralcurve than does that in the erect position. The character of the curve does notchange essentially when the shoulders and pelvis are held and the middle of thetrunk pushed to one side. The curve in this position of the spine is greater in the. Fig. 22.—Side Bending to the Right in the Flexed Position of the Spine in the Model. A lateral curve convex to the left is formed and the vertebral bodies have turned to the left, as shown -by the elevation of the left side of the back. upper lumbar vertebras and in the two lower dorsal than in the upper part ofthe spine. Rotation Accompanying Side Bending Lying on the Face.—-With the cadaverlying flat on the face on the table no rotation in side bending was found by and in some experiments by Schluthess; it was, however, found by BennoSchmidt. With the cadaver lying prone on a table the conditions, of course,are against rotation, the thorax and shoulders being to a certain extent held againstit by the surface of the table. No perceptible rotation is noted in slight side bend-ing under these conditions, but the vertebral bodies turn to the concave side in3 34 THE MOVEMENTS OF THE SPINE marked side bending. In the model lying flat on a table one side of the chest isfelt to
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