The Sacro-Occipital Technique (also referred to as SOT) is a commonly used chiropractic technique developed by osteopath and chiropractor Major Bertrand DeJarnette. The name refers to the sacrum or “tail bone” (the last major bone of the spinal column) and the occiput or base of the skull. The technique is based on normalizing the relationship between these two ends of the spinal column.