Are you sure it's dislocated? I had a dog with a dislocated hip and it was so painful he went into shock. His leg was so twisted that I didn't even see it at first.
I agree with the others and talk to your vet to see what the dog can or can't do.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD