A tool and method for derotating a scoliotic spine while it is being manipulated from a scoliotic configuration to a kyphotic configuration. The tool is used to apply a derotating force to the convex side of the scoliotic spine. The method uses the tool to reduce the derotation of a scoliotic spine....http://www.google.de/patents/US5281223?utm_source=gb-gplus-sharePatent US5281223 - Tool and method for derotating scoliotic spine