Pre-existent vertebral rotation in the human spine is influenced by body position.
Janssen, M.M.A., Vincken, K.L., Kemp, B., Obradov, M., de Kleuver, M., Viergever, M.A., Castelein, R.M., Bartels, L.W.
DOI: https://doi.org/10.1007/s00586-010-1400-3
European Spine Journal 19 (10), p. 1728-1734