Dr. Dudley Joy Morton makes his patients walk barefooted across a black box lined with mirrors. A light fixture is rigged in the box so that pressure of the patient's feet on the soft top of the box makes bright spots on the image in the mirror; from the spots, which record the distribution of pressure, he can diagnose their foot ills. To doctors meeting last week at the Academy of Orthopedic Surgeons in Atlantic City, Dr. Morton, professor of anatomy at Columbia, demonstrated his black box, explained what he had found out by studying the human foot in...
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