Re: Article: Head, Shoulders, Knees, and Toes by Michael J. Hacker
I've also heard "kime" described as a the ability to gather energy into one point and direct it through (not just into) a target to generate some type of lasting effect or reaction. Like striking to the solar plexus (using body structure) and directing the strike through a person and toward their triangulation point.
And with "kotegaeshi," going by the literal translation of "forearm turn" it can be seen that the lock/throw really has very little with twisting or applying pressure to the wrist. And can actually be much more effective and direct (straight down, rather than throwing a person away from our own center) by controlling uke's forearm and elbow to sequentially lock up the elbow, shoulder, and uke's center.