Clarence Selmer Gonstead (July 23, 1898 – October 2, 1978) was a chiropractor and the creator of the Gonstead technique. He established a large chiropractic facility in Mount Horeb, Wisconsin.
Gonstead’s method of chiropractic practice was an extension of his training at the Palmer School of Chiropractic. While Gonstead was a student, school president B. J. Palmer began promoting the neurocalometer (NCM), an invention of chiropractor Dossa Dixon Evins (1886-1932). Gonstead assisted in various efforts to improve the quality of these two instruments. In the 1940s Gonstead became a consultant for Electronic Development Laboratories (EDL). EDL made the original Nervoscope, a competitor device to the NCM. Over the years, Gonstead helped the company define the device’s sensitivity, parameters, and function. Gonstead also worked with various X-ray companies to optimize full-spine 14×36 X-ray exposure, primarily the use of split screens to account for varying patient density on the lateral film.
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