Hi
@ncarlson !
I, too, have practiced yoga for many years and was terrified to ask anyone if I'd ever be able to do even basic asanas. Unfortunately, many people (including my surgeon and, to a point, my PT) have a warped view of yoga, thinking it is just twisting your body into impossible positions, so asking them only upset me.
I had an anterior approach replacement and suffered the complication of femoral nerve damage, so I have muscle atrophy. I have additional issues from yours, but they are muscle related.
I can speak to how my joint feels when I practice yoga.
-I can easily do a forward fold now.
-I have a little bit of pinch in child's pose but it has lessened as I practice and listen to my body.
-I am fine in down dog
-as for sitting cross-legged, I feel a bit of resistance still so at first I put a block under my knee to relax into the pose. It has gotten better. I can sit cross legged now and am working slowly on cobbler pose.
-Warrior 1 pinches but, again, I am listening to my body and do either a modified version or do it on a chair.
I have attended a PT-led yoga class that helped me gain confidence. The teacher only focuses on asanas in a PT focused way, so the spiritual aspect is not there, but she coached me on how to modify safely. I have also found Happy Yoga with Sarah Starr online. She does a lot of chair yoga but incorporates breathing and stillness so that I can get those benefits.
It's a lot slower than I had hoped, but I'm very optimistic that it will come. I have had to practice a lot of patience!
Hope this helps!