. Lateral curvature of the spine and round shoulders . nent ribs. Forcible correction by pure side pressure may increase the rotation, but, sofar as it is effective, will diminish the lateral deviation. That this is not new maybe appreciated by a quotation from Schfeger^ in 1810: Der seitliche Druck aufdie Rippen biege diese an den olmehin scho?; mehr spitzen Wivkein noch mehr Fischer, quoted by Htissey. 152 TREATMENT. Spitzig zu. That plaster jackets ma_v cause increase of the rib angles is demon-strated by Hiissey.^ The same point, that plaster jackets may increase the bonyrotation apparent


. Lateral curvature of the spine and round shoulders . nent ribs. Forcible correction by pure side pressure may increase the rotation, but, sofar as it is effective, will diminish the lateral deviation. That this is not new maybe appreciated by a quotation from Schfeger^ in 1810: Der seitliche Druck aufdie Rippen biege diese an den olmehin scho?; mehr spitzen Wivkein noch mehr Fischer, quoted by Htissey. 152 TREATMENT. Spitzig zu. That plaster jackets ma_v cause increase of the rib angles is demon-strated by Hiissey.^ The same point, that plaster jackets may increase the bonyrotation apparent in the back, has been alluded to by Schulthess and \ulpius.^ It may, therefore, be stated that attempts, in fixed curves, to dimin-ish the rotation by force in any degree directed forward, not carefullyantagonized, will lead to an in-crease of the lateral , attempts to dimin-ish the lateral curve, by purelateral pressure, not carefullyantagonized, will result, in fixedcurves, in an increase of therotation. The solution lies in dealing. Fig. 122.—On the Left is a a Right Dorsal LeftLumbar Curve. In the middle diagram the curve is shownstraightened ; on the right the curvehas been pushed over to the left un-changed. Fig. 123.—Patient Thikti i;n \ears Due to Rickets; NeverTreated. separately with the rotation and with the lateral deviation. Havingcorrected the lateral deviation first, this correction is held, as will be ^ Hiissey: Zeitsch. f. orth. Chir., viii, 2, 235.^Vulpius: Volkmanns Samml. klin. \ort., 276. FORCIBLE CORRECTION. i53In this wav one described, while the rotation is corrected or vice is not improved at the expense of the other. Corrective jackets should be applied to the patients prone, andpreferably with the legs , as this diminishes the physiological curvesof the spine and further simplifies the problem. With a patient thuslying prone, the spine is in the most favorable condition for side


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