Not experienced it myself SF but a fellow livery's ned sustained a nasty wound direct to the hock and as the wound was healing proud flesh started to grow. The vets painted on copper sulphate to burn it off - proud flesh doesn't have a nerve supply so it doesn't hurt the horse - but you have to be very careful not to get it on either healthy skin or the healing edges of the wound. My friend is a nurse so she was able to apply it every other day herself. The wound has healed really well now though it was a lengthy process. I understand that in some instances, it grows so much that it has to be surgically removed. How bad are your ned's wounds? What do the vets say?
Have used copper sulphate and camrosa for proud flesh and both worked well. Hair even grew back on the camrosa treated injury but it was nowhere near as large as the one treated with the CS.
Vet applied the copper sulphate as you do have to be very careful with it.
My shettie cut his leg down to the bone a few years back. He developed proud flesh as it healed. The vet cut it ack a ew times and then I used a solution that he gave me to paint on with kept it down until it healed. You can barely see the scar now.
I've heard since, on here, that Camrosa is useful (ask Tia). Also Henryhorn has mentioned some gauzes that she has used with success. I think they awere impregnated with honey and she got them from a chemist but I'm sure you can buy Manuka honey to use on the wound http://www.natural-animal-care-products.com/Wounds-Ulcers-Sores.htm
If you've still got any from before it was banned dermobion is great
My old mare was slashed out in the field and had some pretty horrendous wounds to her hocks, and to stop the proud flesh once they started healing the vet had me using dermobion every otherday and only on the proud flesh. If I recall I think I was using dermisol on the other days. It was fantastic, you could only see the scar if you looked really hard when her legs were clipped out!
Fusiderm may well do the same job as the dermobion, check with the vet!
My andalusian cut the inside of his hock down to the bone on barbed wire in the new year. When the vet came and cleaned out the wound it was the size of my fist. I thought he might have to be put down. He remained bandaged from top to toe for several weeks but then the bandages got smaller and smaller. Once the wound had filled I had to use a syringe and squirt on a lime base cautorising solution to keep back the proud flesh. To this day unless you knew about his injury you'd never tell anything happened. There is no proud flesh and the hair has grown back almost completely.
Get some good advice from your vet. You cant beat a good one!
Within 3 months of the injury happening which was initially thought to be life threatening my boy was out winning a HT.