. Röntgen ray diagnosis and therapy . Fig. 140.—Oblique Supracondylar Fracture associated with BackwardDisplacement, in a Baby of Six Months. on the hand, the flexed forearm was hyperextended (extensionfracture), which explains that in cases of this kind the obliquefracture-line is directed from behind backward and is also called to the sharply protruding point at the 200 THE EOXTGEN KAYS lower end of the diaphyseal fragment, which offers an ohstacle toflexion. In this ease it was too late to correct the malunion byforce, and a chisel operation had to he suggested therefore.
. Röntgen ray diagnosis and therapy . Fig. 140.—Oblique Supracondylar Fracture associated with BackwardDisplacement, in a Baby of Six Months. on the hand, the flexed forearm was hyperextended (extensionfracture), which explains that in cases of this kind the obliquefracture-line is directed from behind backward and is also called to the sharply protruding point at the 200 THE EOXTGEN KAYS lower end of the diaphyseal fragment, which offers an ohstacle toflexion. In this ease it was too late to correct the malunion byforce, and a chisel operation had to he suggested therefore. In Fig. 110 the same injury is illustrated in a boy of tenmonths. In this case the fracture was associated with epiphysealseparation. Although three weeks had elapsed since the injuryhad occurred, refracture and reduction were successful, the elbowof the anaesthetized child being brought to the edge of the table,. Pig. 141. Supracondylar Fracture. and the manipulations being made in a longitudinal gunstock deformity disappeared completely then. Fig. 141 illustrates the case of a boy of eleven years, whosesupracondylar fracture was mistaken for backward skiagraph, obtained three days after the fracture occurred,demonstrated that the protrusion of the olecranon, noticeable inmidst of the swollen elbow, was due to its backward displacement,which was produced by fracture. The enormous swelling pre-vented false motion and crepitus, hence the error. It is, of course,a great deal more difficult to reduce the fragment in a swollenarea, as it was in this case, while early recognition would havemade reposition easy. As to fracture of the external condyle associated with lateraldislocation, see Fig. 13. SHOULDEK AND UPPER EXTREMITY 201 Jn regard to the various kinds of fractures of the external condylc, occurring during the period of development, the reader is referred to the
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