Elastic disc - a fibrous outer ring enclosing a pulpy inner nucleus - interposed between adjoining vertebrae of the spine. Deterioration of the intervertebral disc through injury or disease leads to back pain
International Human Factors Consulting IHFC ERGO, Ergonomic Glossary,Ontario, Canada 2012. http://ihfcergo.com/information/ergonomic-glossary /, (Ergo - Canad) {746}