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Robert B. Acker, M.D.
JAMA. 1927;89(14):1150-1151. doi:10.1001/jama.1927.92690140002012b.
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Injuries of this type are rare. Wilson and Cochrane describe two forms of tarsal and metatarsal dislocation, one a so-called divergent form in which the metatarsals are displaced both outward and inward, and a second in which the metatarsals are displaced upward in relation to the tarsus. Neither is the same as the type of dislocation here described.

This type of dislocation is especially liable to be a compound injury, as the force necessary to its production must be great. The usual method of production is a direct run-over by the wheel of a vehicle with the foot held in a side position and fixed. The force is applied at one margin of the foot and toward the opposite margin. Practically speaking, I do not believe that an injury exactly of the type shown here could be produced in any other manner. The automobile, by means of its great


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