# Reflexions on wrist flexes and rotations

Jonathan duncanjonathan at YAHOO.CA
Wed Jul 11 14:01:18 UTC 2007

```Hi Adam,
Your explanation is very clear.  Thank you for explaining this to me.
Just one more question.  Which arrow is for the thumb and which is
for the pinky?  What if the hand is pointing down instead of up like in
your examples?  Or should I be more preoccupied if it is an inward or
outward rotation rather than thumb or pinky rotation?

Jonathan

> Hello Jonathan,
>
> On 7/8/07, *Jonathan* <duncanjonathan at yahoo.ca
> <mailto:duncanjonathan at yahoo.ca>> wrote:
> >The rotation arrow can either represent the curve of the thumb
> movement around the axis-line or the curve of the baby finger movement
> >around the axis-line. /*(I don't know how to distinguish the two,
> */
> This is a hard one to understand because there isn't a clean
> distinction. It goes by the feel of what is leading the movement, the
> pinky or the thumb. Maybe this will help a little. When you are doing
> a rotation, imagine that you have to keep either the pinky or the
> thumb still. It will always be one or the other. Ok, and example. In
> ASL the flat hand is used to show the door. Now a door can open inward
> or outward. I have written those two. Notice which is leading, the
> thumb or the pinky. Notice that it can not be the other way around
> because one side of the door is on a hinge. ;-) I hope this helps. If
> you need more clarification, just ask. :-)
>
> */
> ------------------------------------------------------------------------
>
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