Experimentally induced neck pain causes a decrease in thoracic but not lumbar spine stability.

Experimentally induced neck pain causes a decrease in thoracic but not lumbar spine stability.

Pinto, Brendan L;Beaudette, Shawn M;Graham, Ryan B;Brown, Stephen H M;
journal of biomechanics 2019 Vol. 90 pp. 78-83
303
pinto2019experimentallyjournal

Abstract

Maintenance of spine stability is considered to be a critical component of spine health. Ross et al. (2015) used a topical capsaicin/heat pain sensitization model to experimentally induce lower back pain, and demonstrated that the experimental pain experience caused a decrease in the muscular contribution to lumbar spine rotational stiffness (related to mechanical stability) as well as lower back local dynamic stability (LDS). It has yet to be established if pain elsewhere in the body, specifically in other regions of the spine, can similarly affect the stability of the lower back. The purpose of this investigation was therefore to quantify thoracic and lumbar spine LDS as well as the muscular contribution to lumbar spine rotational stiffness after an experimental neck pain protocol. Results demonstrated that LDS of the thoracic spine decreased in response to the capsaicin/heat induced neck pain. Limited adaptation was required at the lumbar spine as demonstrated by the lack of statistically significant changes in lower back LDS or rotational stiffness.

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