長管骨々折の側方転位度の測定方法に就て
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概要
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The healing of fracture has an important connection with the condition of lateral dislocation. On the other hand, it is inaccurate to guess only by looking at the X-ray films of the lateral dislocation of fracture of long bone with naked eyes.Authors designed a new mathematical measurement as follows:As shown in Fig. I, the distances between lateral faces (M & N) and the lengths of riding parts (X & Y) at both ends of the broken bone are determined at two X-ray films projected from such directions as to intersect at right angles.With the Ratios of these lengths to distances, (X/M, Y/N) ratio (d) of the sagittal length of the riding part to the diameter of the broken bone is obtained from the graphs in Fig. II drawn by previous calculation.Ratio (D) of area of the riding part to the cross-section of the broken bone is showed as a function of ratio (d) on the oblique line in Fig. II.
- 西日本整形・災害外科学会の論文