. A practical treatise on fractures and dislocations. Lines of fracture of externalcondyle. 254 capitellum in a backward or backward and upward direction, in thesecond through the olecranon upward and outward against the outer slope of the trochlea, and in the third itacts by avulsion through the externallateral ligament and the muscles attachedto the coudyle. I have found it easy toproduce the fracture by adduction of theextended forearm in bodies of the young,or by a blow upon the palm with theelbow flexed at a right angle (Fig. 122).In one or two cases I have thought thecause wa
. A practical treatise on fractures and dislocations. Lines of fracture of externalcondyle. 254 capitellum in a backward or backward and upward direction, in thesecond through the olecranon upward and outward against the outer slope of the trochlea, and in the third itacts by avulsion through the externallateral ligament and the muscles attachedto the coudyle. I have found it easy toproduce the fracture by adduction of theextended forearm in bodies of the young,or by a blow upon the palm with theelbow flexed at a right angle (Fig. 122).In one or two cases I have thought thecause was a blow upon the back of thecondyle. The line of fracture runs obliquelyfrom the outer ridge of the humerusabove the epicondyle downward andinward into the joint, ending usually inthe groove of the trochlea, coinciding inpart at least with the epiphyseal line sothat the fragment comprises the capitel-lum, the outer portion of the trochlea,and perhaps the epicondyle. In theadult the line seems usually to extendsomewhat higher. As the fragmentremains attached to the radius and ulnaby the lateral ligamen
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