Should I adopt this puppy?

Theres this pet rescue that was offering a boxer/lab mix at a pet adoption in front of my work on Saturday. I immediately fell in love with this puppy. He was the only one to survive in the litter and him and the mother were confined in a really small space. I think this stunted the growth a bit, because the puppy was TINY. Well he ended up getting adopted by a family on Saturday but when they took him to the vet they said he had rapid bone growth and his “bowed” legs might need surgery. So the owner of the rescue brought the puppy into my work today and said I could have him as a birthday present (free of charge) if I would take care of him.

I’m a huge animal lover, and turning down a 2 month old puppy is almost the hardest thing in the world to me. But I already have a year old boxer in a 1 bedroom apartment.

Not only that, but she kept saying “the only condition of having him is that you take him to our vet.” It seemed fishy that she would want me to take him to a specific vet, and that vet had told them the dog could be fixed without surgery, and with help of a brace/splints. I’d really love to help this dog, and I’m sure my other dog would love a companion. But it breaks my heart to say no.
What would u do?
I do believe I can afford the dog. Right at this moment at least. I just don’t think I’m prepared for extra expenses if it has to have surgery.

And I’ve known the ladies at the rescue for almost two years and I always volunteer my time with them. I just felt like there was something she wasn’t telling me about the condition. The people that “adopted” the dog on Saturday were a mom and dad with 2 kids. So if they couldn’t afford the dogs problems, that makes me worry that I wont be able to.

But my animal lover side tells me to do what I can to help this animal… cuz other people might not be able to, especially with the economy.