Walls Aluminum Twisted Slanted Stirrups
These are the absolute BEST stirrups for knee/ankle/hip pain that I've found. I know 4 people that have had knee issues and they all have these and there is immediate relief. My mom has a pair and she LOVES them. They also help to keep her feet in the stirrups which she's had problems with in the past. Instant relief for her. We can actually trail ride for longer then 20 minutes now.
The ones that you posted didn't help me at all with my pain.
There is a noticeable different between rawhide and aluminum but those slanted ones, and regular aluminum, I haven't felt a difference. And still had aches and pains.