This looks pretty normal for doggie elbows.
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This looks pretty normal for doggie elbows.
My 5 yr old beagle and my parents 11 year old lab both have these. It comes from layin on hard floors or concrete.
First question, how old is your dog?
From all appearances in your pics, it is normal. They will build up a callous depending on how/where they sleep/lay. Some house dogs will never develop them because they are sleeping on the couch, etc. Yard dogs, usually develop some pretty tough elbows. Nothing to be worried about (I am not a vet, but I did stay at Holiday Inn once.)
On the other hand, if there are bald spots anywhere else on the body (flanks, throat away from collar, etc) then there could be several problems. Hopefully the culture your vet took will clue you in if there are any problems there, but again not much to worry about. A chance in diet, etc and it usually recovers.
Hope it helps. I am NOT a vet, but am a dog lover and have a wonderful one!