Hi kate,
That’s certainly possible. When you are experiencing the type of issues that you are experiencing and are “outside the averages” that would be suitable for most people … it may be a complex combination of factors that could be the cause for your experience including your physiology or flexibility or any pre existing health conditions outside of just the mattress itself. A mattress certainly won’t cure a health or physical condition so it may be a matter of choosing the “best possible” mattress rather than a “perfect mattress”.
Some of the information in post #45 here and post #1 here may be helpful as well.
I really don’t know what I can add to my comments in my previous replies and unfortunately there is no way for me to predict which combination of materials or layers will have the best chance of success based on “theory at a distance” or “specs” (either yours or a mattress) when there are so many complexities and possible causes involved and you are “outside the averages” that would work well for most people. The only way to know which combination of materials and components will work best for you for certain will be based on your own careful testing or your own personal experience.
Phoenix