. Atlas and epitome of traumatic . Fig A, FigJ. : Ht FBAOTUEES OF THE UPPER EXTREMITY. 175 the action of the triceps muscle. An exception is formedby the other supracondylar oblique fractures, the flexion-fractures of Kocher (Fig. 76), in which the course of theline of fracture is such that posterior displacement of thelower end of the fragment is impossible. The sharp endof the shaft of the humerus in these fractures is displacedbackward and sometimes enters the triceps muscle, whereasin the so-called extension-fractures it is displaced forwardand may penetrate the brachialis anticus
. Atlas and epitome of traumatic . Fig A, FigJ. : Ht FBAOTUEES OF THE UPPER EXTREMITY. 175 the action of the triceps muscle. An exception is formedby the other supracondylar oblique fractures, the flexion-fractures of Kocher (Fig. 76), in which the course of theline of fracture is such that posterior displacement of thelower end of the fragment is impossible. The sharp endof the shaft of the humerus in these fractures is displacedbackward and sometimes enters the triceps muscle, whereasin the so-called extension-fractures it is displaced forwardand may penetrate the brachialis anticus. An important step in the examination consists in seiz-
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