2. Noun. (surgery) The correction of a rotational deformity ¹
¹ Source: wiktionary.com
Medical Definition of Derotation
1. 1. A turning back. 2. In orthopedics, the correction of a rotation deformity by turning or rotating the deformed structure toward a normal position. Origin: L. De, away, + rotatio, turning (05 Mar 2000)