Good evening @ldtfranklin and welcome to Connect. This is a place, actually, a forum that is has a goal of increasing knowledge by sharing the actual experiences of other patients, caregivers, and providers.

You are just recovering from a very recent surgery. It is way too early to lock yourself into a diagnosis of neuropathy in your right foot. It has only been 4 weeks. A TKR is major orthopedic surgery. Muscles, ligaments, and the surrounding fascia that connects everything need time to heel and build strength that will support your body. I have had two TKRs. The last one was 1 and 1/2 years ago. I remember dealing with the heavy feelings in the arch of the foot. Even tonight while writing this I am testing my feet. They are not perfect but much better.

Give it some time. And here's a hint. Every morning I do a Yoga pose called "Legs up the Wall". Just "Google" it. Do you do the sliding exercise? That also helps. I also try to push any swelling or other form of liquid from the ankle and knee down my leg while it is in the air. Then you can eliminate the fluid when you urinate. Did you start PT right after your TKR? Was it a robotic surgery?

The other big help for me is MFR, myofascial release therapy. You can start that immediately to help you with this situation. Do you know about MFR?

I am pretty amazed that you had a bone broken during surgery. I have never heard of such an experience. That must also be trying to heal along with the other TKR elements.

Please let me know your response at this point.
May you be free of suffering and the causes of suffering.
Chris