Identifier: treatiseonner00sach (find matches)
Title: A treatise on the nervous diseases of children, for physicians and students
Year: 1905 (1900s)
Authors: Sachs, Bernard, 1858-1944
Subjects: Nervous system Children
Publisher: New York, W. Wood and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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e cervical region the sclerosis of the column ofBurdach begins to diminish, and disappears altogether in the vicinity of themedulla oblongata. 342 THE NERVOUS DISEASES OF CHILDREN. 2. The direct cerebellar tract is involved from its beginning in the lowerdorsal region to the upper cervical region. Toward this latter part it dimin-ishes considerably, but is most marked in the upper dorsal segments. Sev-eral observers have noted that the lesion extends beyond the direct cerebellartract, and involves the antero-lateral tract, or tract of Gowers; and Mariegoes to the extent of stating that he thinks this involvement of the antero-lateral tract an almost constant feature of Friedreichs disease. 3. As for the lateral columns, the opinions of authors differ somewhat.Marie is not willing to allow the regular involvement of the lateral columns,while he concedes that the diseased fibres occupy the position of the crossedpyramidal tract. He does not believe that they represent the fibres of that
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Fig. 82 —Section through a Cervical Segment from a Case of Friedreichs Disease.(Schultze.) Degenerated areas in posterior and lateral columns and in anterior col-umn (left half of figure). Posterior root fibres also degenerated. tract. His reasons for maintaining this are, first, that the lesion of the lateralcolumns in Friedreichs disease diminishes considerably from below upward tothe level of the lower portion of the medulla oblongata, the very reverse ofwhich would occur if these fibres were part of the pyramidal tract. Secondly,that on a transverse section of the spinal cord the localization of the lesionof the lateral column does not correspond exactly to the site of the lesion ofthe pyramidal tract proper. Third, nothing in the clinical appearances of Fried-reichs disease reminds one of the symptoms which are a constant accom-paniment of changes in the pyramidal tract. The only explanation whichMarie is able to give for the fibres that are affected in the lateral region istha

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