Hmmmm. What I read is that it is the wrist, not the elbow, that is the culprit, that if you can keep the wrist straight in the night it has a positive effect. But you are saying that keeping the elbow straight does the same thing?

In the past I've had terrible problems with it, i.e. up by 2:00 am with pain radiating up into the shoulder, and not able to sleep the rest of the night.

Either James Joyce or Norman Mailer wrote about the ailment, whether or not they realized what they were saying.

He- which ever one it was - wrote that the soldiers that were building a fence were up by midnight 'windmilling' their arms so they could go back to sleep.