What a great update,
@korpse ! Your telling of Trash's latest adventures and escapades summed up what I've tried to convey re my own hen; that recovery from severe frostbite injury is not just about a chicken surviving; it's also about a chicken Thriving. Trash is very much enjoying her life, and your update put a smile on my heart.
Re her prosthetics, I will be very interested to see how they work out. Your words that figuring out how to put them on her is requiring a learning curve led to me have this thought. When humans get fitted with a prosthetic after losing a limb, they don't just get handed the prosthetic with instructions "Here it is; take it home and wear it." Instead they get multiple fittings and extensive physical therapy to make sure the prosthetic works as intended. So it makes perfect sense you are struggling with the mechanics of figuring out how to get the best function regarding Trash.
The photo of Trash walking on her left stump also caught my attention. Is she mostly bearing her weight on her hock and remaining shank portion? If so, that is similar to how Matilda adapted to restore her balance. But doing so caused her shanks to spread out almost as if she was making herself new "paddle feet." That is the main issue why I decided to rule out getting prosthetics for her. The bottoms of her shanks now look like this:
View attachment 3080380
I wouldn't even know where/how to take measurements to order a prosthesis. The tip/end of her stump, or the widened shank part? I've thought I waited too long to get her a properly-fitting prosthetic; that I should have done so immediately after the stump wounds healed, same as you have done for Trash.
How does the prosthetic change her posture and balance? Trash's thread is the first I've seen on BYC where someone ordered 3d-printed plastic prosthetics for their bird. So whatever successes and limitations you encounter in making them work, I think your input will help future chicken tenders figure out how to best help their own amputee patients.
And my message to Trash? You go girl!