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FIGURE 70.8
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Electrical contact. Various damaging forces involved in high-energy electrical shock. With voltages greater than 1000 volts, electrical contact (arc mediated) precedes mechanical contact. High surface temperatures at contact points produce deep burns. Current passage through extremity leads to electrical breakdown of muscle and nerve membranes. Prolonged contacts of several seconds result in substantial deep tissue burning. High-energy arcs produce shock waves that can cause blunt trauma.

出典

img 1:  From Danielson JR, Capelli-Schellpfeffer M, Lee RC: Upper extremity electrical injury, Hand Clin 16:225, 2000.