@pelicanpoint Hi Tom, with as much walking as you do, having a sore on your heel for 10 months is pretty concerning on multiple levels. From a little research this morning, there have been some rare, documented cases of ulcers in lower legs and feet associated with longterm, higher dosages of HU. Again, rare. Apparently there can be changes in the cellular structure for normal cell repair which may interfere with usual wound care treatment.

Your doctor took you off the hydroxy for now but it’s important to have the wound tended by a professional. Make sure they’re aware of the Hydroxyurea involvement. Have you consulted with a podiatrist or dermatologist?

So, I’m wondering if you’ve ever had any prior problems with a wound healing? I’m sure if you are a diabetic you would have mentioned that. And, you didn’t specifically blame contact with your footwear causing the original wound.
You need You need a wound care specialist. I used to handle claims made against nursing homes where both decubitus and stasis ulcers occur with unfortunate frequency, most decubs usually from a bad combo of diabetes and lack of movement. Very often a wound care specialist nurse would be called in and accomplished what no one else could.
If it were me I would ask my MD for help finding one or for referral to a dermatologist to find a wound care specialist. Hospitals also usually have dedicated wound care departments. Maybe Lori an add resources for such a specialist?
Please do not delay in finding help to heal that wound.