Don J. Modesto wrote:
I've had people bend my fingers backwards (very effectively, thank you) as prelude to SANKYO
No argument from me since that is the way we practice it
, but the sankyo/sankajo control itself is moving the elbow and shoulder with the joint, not against it.
What I meant to emphasize in my previous post was that if we look at the actual controls themselves, and not the way we get to them then only hijishime and hijiate hyperextend the joint. I agree that there are lots of manipulations go against a joint and that Aikido principles can be applied against many joints and not just those we talk about within basic techniques.