Mastiff pup has hematomas on her elbows from plopping on the hard floor?

my mastiff pup is 3 months old and has developed what is called hematomas on her front elbows from hitting the floor to hard. i bought her pillows to sleep on but she like the cold floor best. will this go away? is there more i can do? the vet says he can not drain them for fear of infection any one else have this problem with a mastiff????

I have been breeding mastiffs for 12 years , Do not let the vet drain it , it will go away , I had a 3 month old who also got it, It took about 6 to 8 months for it to go away.
The hematoma is natures way of adding extra padding to protect the elbow , It dose not cause any pain to the dog so leave it alone . It is very common in older mastiffs but puppies can also get it , My violet would throw herself to the floor , not lay down gently, this is why I believe she developed it ,
I HAVE KNOWN A FEW PEOPLE WHO HAVE ALLOWED THE VET TO DRAIN IT AND IT ALWAYS CAME BACK ,
As the vet said , provide extra thick soft bedding , those interlocking rubber mats you can by at walmart are also good to place in places she likes to lay down.
remember for some reason your pups body has decided it needed the extra padding to protect the elbow , do nothing to try and bring it down , nature knows she needs the padding right now , PS Violet the dog who got it at three months of age passed OFA hips and Elbows at 2 years of age , if the padding on the elbow had not done its job of protecting the elbow she may not of passed elbows at 2 years ,, hope this helps .

Hygroma's are common in large and giant breeds. Whatever you do, don't let a vet talk you into draining them. BAD idea and often causes more problems, infections, etc. You can try to encourage the pup to lay on the bed but that probably won't work. When your pup is laying around with you, you can vigorously massage the elbows. It helps to break up deposits. You can also put some raw vinegar in his water or on his food. That helps too.
Other then that, wait it out and it WILL go away on its own. It might take several months. Be patient and don't worry about it. Vigorous massaging helps the most.

my mastiff puppy got the same thing on 1 elbow at about same age as yours (3months). vet said not to drain and also that he never saw one on a puppy so young.. vet also said he has never seen them get it on both elbows.. so it has been about 5 weeks now and sure enough the lump has gotten SLOWLY smaller, denser (harder), and my baby is just plain outgrowing the thing since they grow so fast.. it is very very common with big dog breeds and is a slow process of healing although often it will never go away fully (becomes dense scar tissue close to the bone) although it should become hardly noticable long before the puppy is fully grown.. also very common for mastiffs to p[refer the hard floors so try to at least keep them in area without concrete.. wood or tile is a whole lot better than concrete.. try not to worry as the mastiffs have been doing this for hundreds of years ( elbow sores, perferring hard surfaces, plopping down) and still do ok under normal circumstances