Atlas and epitome of traumatic fractures and dislocations . remind us of the effect of the biceps on the upper,fragment of the radius. This muscle is a the limb therefore be bandaged with the hand inpronation, while the upper fragment of the radius is insupination, the treatment would result in a very imperfectrecovery with loss of supination. Furthermore, an angular displacement of the radius atthe seat of fracture may interfere with the movement orunfolding of the interosseous ligament, thereby diminisli-ing the excursions of the bone in supination. We conclude, therefore, t
Atlas and epitome of traumatic fractures and dislocations . remind us of the effect of the biceps on the upper,fragment of the radius. This muscle is a the limb therefore be bandaged with the hand inpronation, while the upper fragment of the radius is insupination, the treatment would result in a very imperfectrecovery with loss of supination. Furthermore, an angular displacement of the radius atthe seat of fracture may interfere with the movement orunfolding of the interosseous ligament, thereby diminisli-ing the excursions of the bone in supination. We conclude, therefore, that after careful reduction ofthe fragments, the arm is to be fixed in a position of sup- 202 FRACTURES AND DISLOCATIONS. illation on a splint that must not be too narrow. Thesplint may be applied either to the dorsal or the volarside of the arm; or^ better stilly fixation may be securedby the use of two splints^ a long and a short one. It isin these fractures that especial care becomes necessary tosee that the splints are well padded; that the bandage is. Fig. 89.—Improvised extension dressing for ambulatory treatmentof a fracture of the forearm with a tendency to angular displacementof the fragments. not too tight; and that the hand and fingers are left ex-posed for constant inspection. For it is in such cases thatneglect of these precautions, especially the a23plication ofa circular plaster-of-Paris bandage immediately after theinjury, is most apt to produce gangrene and ischemia (seeGeneral Considerations). The dressing should be changed FRACTURES OF THE UPPER EXTRE^IITY. ^03 at the end of about a week, and the position of the frag-ments at this time carefully examined. If one observes atendency to angular displacement, with the vertex of theangle on the extensor surface, it may be successfully com-bated by applying an appropriate splint to the extensorside and bandaging the arm in extension. In some casesan extension bandage by means of Cramers splints maybe improvised (
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