Pronation 4 : The downward turning of the palm. Twisting the hand and forearm in the direction of the thumb. The rotation of the forearm to position the palm downward
Humanics Ergonomics Inc. (A Human Factors and Ergonomics Consulting Firm), Humanics Ergonomics (Ergonomics Glossary of Postures), Texas, USA 2014. http://www.humanics-es.com/glossary.htm, (Ergo - Amer) {738}