. A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science . the posterior thirdof the vertebra, the movement of the anterior part ofthe vertebra being in the opposite direction from thatof the posterior. The length of the anterior portion infront of the axis of rotation being greater than the pos-terior, the amount of deviation from the normal of thebodies is necessarily greater than that of the spinous proc-esses. The rotation of the spine uecessarilj involvesthose parts of the skeleton which are attached to it, asthe rib
. A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science . the posterior thirdof the vertebra, the movement of the anterior part ofthe vertebra being in the opposite direction from thatof the posterior. The length of the anterior portion infront of the axis of rotation being greater than the pos-terior, the amount of deviation from the normal of thebodies is necessarily greater than that of the spinous proc-esses. The rotation of the spine uecessarilj involvesthose parts of the skeleton which are attached to it, asthe ribs, and the result may be seen in the shape of thethorax. If rotation occurred asadistinct movement, theaxis of its rotiition would then remain in the centre of thetrunk, the bodies would describe a curve upon one sideand the spinous processes a curve of a smaller arc on theother. This rotation, like the lateral deviation, may af-fect the whole of the spinal column, or only a portion, ortwo sections in different directions. Although these two distortions, rotation and lateraldeviation, ma_v be studied independently, it must be. Fig. 316-.— Sljowiug Rotation. remembered that clinically they are always , they are always associated in the same relation,in that the rotation of the bodies is always toward thesame side as the deviation of the column. It is necessary to remember, in relation to deviation androtation, that, since the rotation of the boilies is in thesame direction as the deviation of the column, the degreeof divergence of the body of any vertebra from the 457 Lateral Curvature ofthe Spine. REFERENCE HANDBOOK OF THE MEDICAL SCIENCES. ; straight line or midline of the trunli, is the amount ofUiteral deviation of the column at tliis point plus theamoimt of rotation; and the amount of departure of thespinous processes from the midline (since the movement,in rotation of the posterior part of the vertebra is in theopposite direction from that
Size: 1343px × 1861px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbuckalberthalberthenr, bookcentury1900, bookdecade1900
