. Modern surgery, general and operative. silver-forkdeformity (Figs. 384, 385). Silver-fork deformity is present in from 60 to 70per cent, of cases. The lower end of the upper fragment can be felt beneaththe flexor tendons above the wrist. The position in deformity is produced bythe force. Some consider it is maintained by the action of the supinator longusand the flexor and extensor muscles, but particularly by the extensors of thethumb. Pilcher has demonstrated the fact that in this fracture a portion ofthe dorsal periosteum is untom, and this untorn portion acts as a binding bandto hold the
. Modern surgery, general and operative. silver-forkdeformity (Figs. 384, 385). Silver-fork deformity is present in from 60 to 70per cent, of cases. The lower end of the upper fragment can be felt beneaththe flexor tendons above the wrist. The position in deformity is produced bythe force. Some consider it is maintained by the action of the supinator longusand the flexor and extensor muscles, but particularly by the extensors of thethumb. Pilcher has demonstrated the fact that in this fracture a portion ofthe dorsal periosteum is untom, and this untorn portion acts as a binding bandto hold the fragments in deformity. Pronation and supination are lost. Inthis fracture the hand can be greatly hyperextended (Maisonneuves symptom).Crepitus, which is best obtained by alternate hyperextension and flexion, canbe secured unless swelling is great of impaction exists. Crepitus on sidemovements is rarely obtainable. Impaction may greatly modify the deformity,though displacement generally exists to some extent, and the fragments do not.
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Keywords: ., bookcentury1900, bookdecade1910, bookidmodernsurger, bookyear1919
