A new contribution to the history and etiology of spondyl-olisthesis / by Franz Ludwig Neugebauer ; translated by Fancourt Barnes.

  • Neugebauer, Franz Ludwig, 1856-1914.
Date:
1888
Catalogue details

Licence: Public Domain Mark

Credit: A new contribution to the history and etiology of spondyl-olisthesis / by Franz Ludwig Neugebauer ; translated by Fancourt Barnes. Source: Wellcome Collection.

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    38- form of the pelvis obtecta, and tbat tbat form is eitbcr spondyl- izematic or spondyl-olisthetic, and since the posterior view provcs the absence of any projecting gibbus, the pelvis must consequently bave been spondyl-olisthetic. For the rcst, Doctors Charpentier, Guéniot, Tarnier, Porak, Doléris, Trclat, Desprès, and several other Parisian obstetricians and surgeons, to whom I stated this déduction, completely agreed with it. I will not argue further in favour of my view of the case, as I believe these drawings aflford a proof of its accuracy, and will only mention a most simple key to the analysis of such cases by the proportions of the pelvis in length and breadth. By a comparison of figs. 15, 16, 17, and 18, we can see that if in each of these diagrams we lay down the bitroclianter line A B, the line joining the crests of the ilia C D, and if on either side join A to D and B to C by straight lines A D and B C produced to meet on that side to which they converge, these lines from the iliac crests to the trochanters will intersect in some point E, which in the normal pelvis (fig. 15) lies a long way above the bitrochanter line, in the luxation pelvis (fig. 10) it lies considerably lower down, while in the spondyl-olisthetic pelvis it lies below the bi-trochanter line. In the first case, and also in the second, the figure A B C D forms a trapezium with the base downwards ; in the third case the base of the trapezium is the upper line CD; or taking the isosceles triangle A B E, in the two former cases the apex E is situated above the pelvis, while in the third case it is below it. The shape, height, and width of the trapezium and triangle are of course quite different in the three cases, and are typical in each diagram. Now in an outline sketch of Depaul s case (fig. 18), treated in the same way, the base of the trapezium and of the triangle is formcd by tlio bitrochanteric line, tbougli in this case the triangle is not isosceles, its apex beiug displaced to the right by tlie existing scoliosis. The variation in the figures licre shown lias its primary basis in the alteration of the position of the bip boue in relation to the fémur. The changes in the shape of the pelvis arc represented dia- grammatically in tlie transverse perpendicular section ot the pelvis (fig. 19). In the normal pelvis A B C D, straight lines drawn tlirough the sides of the pelvis intersect when produced at