Bunny has bad sore hock that is swollen and scabbed over

Question
Our pet rabbit Betty has a bad sore hock on her front right foot. We took her to our vet, who prescribed "Chlor Palm suspension" antibiotic twice per day. The vet also told us to soak the paw in warm water with epsom salts several times per day. We've been following her directions for three days now.
The swollen area (it was basically a big bump) has now broken open and looks like it has drained a bit. It's not as big as it was, and is now covered by a large dark scab. It is still swollen, but it doesn't seem to be bleeding or leaking.
Betty is still acting relatively normal, although she hates her medicine and I think the foot soak stings a bit. She is still running around and digging with her front paws. But she is favouring the paw.
I'm wondering if there's some kind of ointment I can put on her sore to help it heal and reduce the pain? I don't want to bandage the foot because I think having it exposed to air will help.
Other info about Betty - she's a rex mix with velveteen fur, and a free range indoor bunny. She has a large cage with a carpet bottom. The floor is clean and dry and I've put a fleece pad in there to give her a softer bottom. She was adopted from someone who kept her in a plastic bottom cage and she is prone to sore hocks. We've never seen one this bad on her though. There's nothing in her environment that should have caused this, other than her seeming to be pre-disposed to sore hocks.

Answer
Hi,

you can put some original formula Bag Balm on it.  This won't sting, and it's not toxic.

If the skin wasn't broken open but just bare, you could put New Skin on it.  Don't use on cracked or open skin as it will be painful.

As she is a rex mix, watch how much you feed her.  Rex breeds gain weight by breathing air and easily become overweight.  When their activity levels drop in summer (heat) and winter (cold) their calories burned goes down and they can plump up pretty easy.  Our rex girls gain weight very easy.  Because they were bred to gain weight easily, and genetically have short fur, they are at risk for sore hocks more than other breeds.

While general vet guidelines say 1/4 cup pellets per 5 pounds of body weight, per day, for Rex and mini-rex rabbits I advise 1/8 cup pellets per 5 pounds body weight, per day.  

If she isn't lean (nice narrow taper from rear to shoulders, looking at from above) the extra weight helps wear down hock fur and create bare spots and eventually sore hocks.

I would also suggest for her to spend any cage time on either synthetic sheepskin or medical pet bedding from Pet Palace.  It is the best stuff for short haired rex fur.