Have I misdiagnosed Bumblefoot?

[Country4ever]

I've posted a couple times about my 10 and 1/2 year old Easter-Egger. She can't put much pressure on her foot. I was thinking it was a hip or knee problem, even though her foot was a little swollen. I was thinking it was swollen because she's walking on it funny, in order for her hip or knee not to hurt. I also considered a broken ankle or foot, but when I would manipulate the foot, she didn't flinch. Today, her foot is a bit more swollen. the other day, I checked the bottom of it and she has a black, flat, hard pad on the bottom of her foot. I thought it was just a dirty callous.........
Here's a pic of her foot (the top of it). You can see the swelling on one side. The swelling is very soft.
I guess I thought Bumblefoot would be much harder and more painful to move.

I'm ready to open it up tonight, if you think it might be Bumblefoot. There are a couple really good threads here on doing that, so I feel okay about it. I just don't know how to have my husband hold her so I don't have to hang upside down. Any suggestions?
She's very old and I don't want to compromise her breathing while I'm doing this.

Let me know if you can tell by the picture if it could possibly be bumblefoot. Or a fracture? A splinter?? I tried to wrap her leg to give it support, in case it was a strain/fracture higher up, but she just couldn't tolerate it. I could try giving her Baytril and just wrapping her foot, if you don't think its bumblefoot. Otherwise......I think I need top open it up.

Chicken feet are hard to read! They are so funky to begin with!

Here's the pic.

 

[Country4ever]

Well dangit..........I thought I was on to something. I soaked her feet in some epsom salt warm water and took a good look, and the bottom of that affected foot looks fine. There's one tiny brown dot, but its not enlarged or swollen or red. In fact, her good foot has a big black scab on it! Can this swelling you see on the pic still be bumblefoot?
Now I'm back to thinking knee or hip. I've been holding off on taking her to the Avian vet, because I honestly thought she would show signs of improvement by now, if it were a sprain. Its been 2 weeks.
I'm still wondering about that swelling.............

 

[CedarAcres]

I'd take some more photos of her feet (bottoms) and maybe the side of the swollen area. Is it warm to the touch? When I suspect a sprain I usually do some Epsom salt soaks for a few days and they usually helps. The scab may be bumble foot but its hard to say so without seeing it. Has she injured that swollen area in the past? Could it be an old injury that did not heal correctly or has been reinjured?

 

[Country4ever]

I'll try to get more pics, but its hard to do it myself. My husband doesn't home 'til late........
Actually, the bottom of her foot looks great. I think the little brown dot is just like a freckle.
The toe that is attached to the swollen area moves like it isn't even attached to anything.......but then I did the same on her healthy foot and it was similar.
I'm trying to not take her to the Avian specialist, as I probably wouldn't do any surgery on her (orthopedic-wise). I've read that sprains take forever to heal, so I was trying to be patient. But when I started thinking it actually could be a staph infection, I freaked that hadn't pursued that possibility more aggressively. But after I washed her foot up, the bottom looks good.......its just that swollen area on the side. I didn't know if Bumblefoot could present that way or not.
I'm tempted to stick a needle in that swollen area, and if it leaks pus.........then I would open it up.
Thanks for your help!