HomelessDogHitNeedSurgery

Came across a homeless women carrying him on her shoulder asked if she needed help she said she needed a ride to take him to rest that he was hit by a train along with another dog that did not make it . She had no way to get him vet care so I took him in . I had no idea the damage that was done to him or how much it would be but I couldn't just let him hurt with no help . First vet bill was 700$ for X-rays and medicine. He's in pain medication but still cries constant as if he is in pain . Both femurs are out of socket and needs surgery as soon as possible the cost is $4500. Please help