Since the discovery of chiropractic in 1895, numerous methods have been used by chiropractors to detect where the chiropractic intervention is required on their patients including palpation, radiography, and postural evaluation. Objectively defining, analyzing, measuring and adjusting the vertebral subluxation according to a designed clinical research methodology should be central to chiropractic. Chiropractic technique developers have attempted to do so with varying levels of success. This article focuses on the measurement of leg length inequality (LLI) - mostly functional (fLLI) rather than anatomical (aLLI) - by the means of leg checks as indicators of vertebral subluxation or subluxation correction. Understanding the history related to chiropractic methodology for measuring LLI may help today's chiropractors to better ascertain what they are doing ... [abstract truncated]
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