With a leg or foot injury, suspected injury, or malformation, I use a chick chair or a sling. Chairs are usually for peeps, and yours looks to be sling size. You can make a chair for a larger chicken (a chair is a little hammock in a box, where the chicken hangs in the box (which supports the hammock), and there is food and water within reach. A sling's the same principle, but often easier to make, especially if your "hospital cage" or dog crate has holes in the top. I make my slings out of an piece of fabric (any kind of fabric, you can use old clothes if you want). The main idea is an "H" with real long arms and legs. The chicken rests in the short part of the "H" (you cut this about 1 & 1/2 times as wide as the chicken) and the arms and legs of the "H" tie above its head to make a little sling. I just tie the ties on one side together & do the same on the other side - otherwise, if you tie them all at the center, you won't be able to adjust it as easy and your chicken might be able to twist herself around. With the finished sling, your chicken is like the filling in a taco - secure on bottom and sides, and only really able to face one direction. And that's where the food and water goes. Always trim the area by her bottom so the poop does not just fall in the sling. If she gets uppity & tries to get out, you can pin a cover piece of fabric snug on top to keep her in the sling. I have also found that it is sometimes easier to slit 4 - 8" of each arm and leg of the "H" lengthwise, creating two ties where there was one. Then you can tie each corner to the cage/crate ceiling separately, allowing for maximum flexibility in height and positioning of chicken in the sling. This works well for very large chickens. And I don't sew the sling - once it's done, it's trash, b/c make one for each occasion as needed. There are different kinds of slings, and you can see some examples of these and chick chairs by doing a google image search for them. Hope this helps!
