I stopped playing with poser some time ago but I was mostly doing short movements animations.

There is no solution for that - turn IK on hand and make some key frames and try to make the movement as close to the thigh as possible. At first this approach may look easy but it's not - sooner or later the joints will get twisted beyond any repair:)

Better is to make it without IK but then you need some practice and remember to keep keyframes not too close to each other - this approach is much more difficult but it will give better results

Another way is to change the animation - completely remove that part from your project (since in most cases the results are bad).

 

No good news:)