You need a new vet. A good vet is worth his weight in gold. He will save you money in the long run, even if it costs you more now in fees or driving.
If the drainage is significant, you can use maxipads. They are large and cheap. Just change the bandages often... you don't want any of that nastiness staying pressed against such an open wound for an extended time. And get a 2nd opinion from a knowledgeable vet!
A standard orthopaedic brace probably won't help. It won't conform to the leg closely enough to hold the bandages in place, you may have slippage. If you did try this I would suggest customizing a really stretchy flexible one (ie the cheapies). You do NOT want a style that is designed for patella support. It has bracing that would chafe. Maybe sewing velcro strapping on the outside and bandage pockets on the inside. But you would need a few and they would have to be rotated and washed daily.
If the drainage is significant, you can use maxipads. They are large and cheap. Just change the bandages often... you don't want any of that nastiness staying pressed against such an open wound for an extended time. And get a 2nd opinion from a knowledgeable vet!
A standard orthopaedic brace probably won't help. It won't conform to the leg closely enough to hold the bandages in place, you may have slippage. If you did try this I would suggest customizing a really stretchy flexible one (ie the cheapies). You do NOT want a style that is designed for patella support. It has bracing that would chafe. Maybe sewing velcro strapping on the outside and bandage pockets on the inside. But you would need a few and they would have to be rotated and washed daily.