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The most notable thing in this book is the explanation of the uniform rotation of the vertebræ in scoliosis so that the sides of vertebræ toward a convexity of the lateral curve are twisted backward. This the author explains by the necessary elevation of the ventral ends of the ribs on the side of the convexity, and the consequent increase of anteroposterior distance between the ends of each rib that is thus elevated. After the limits of looseness and elasticity are reached, this increasing anteroposterior separation of the rib ends, the author credibly asserts, forces the corresponding sides of the vertebræ backward, i. e., rotates them. This explanation applies of course only to the dorsal, rib-bearing part of the spine; the author therefore considers the dorsal rotation the primary one, and the lumbar rotation, which he does not explain, he regards as secondary. Accordingly, he believes that the dorsal deformity
Lateral Curvature of the Spine and Flat-Foot, and Their Treatment by Exercises.. JAMA. 1911;LVII(21):1715. doi:10.1001/jama.1911.04260110215033