Reposition
Repositio
Definition
Reposition is defined as the opposite of opposition, where the thumb moves away from the tip of the other finger, for instance, to release a grip against an object. On the contrary, opposition of the thumb is defined as the positioning of the thumb pad (or tip of the thumb) against the distal pad (or tip) of any of the fingers.
Opposition and reposition movements occur at the first carpometacarpal joint, i.e. the joint between trapezium and first metacarpal bone.
References
Text written by Muhammad A. Javaid, MD, PhD © 2023 IMAIOS.
Tonkin M. (2020). Thumb opposition: its definition and my approach to its measurement. Journal of Hand Surgery (European Volume). 45(3):315-317. doi:10.1177/1753193419889504
Jones, O. (2020). Anatomical terms of movement in ‘TeachMeAnatomy’. Available at URL: https://teachmeanatomy.info/the-basics/anatomical-terminology/terms-of-movement/ [accessed on Feb 12th, 2023]
