My Riley was just diagnosed with this hip joint ailment yesterday!

Im so scared. He needs to have surgery. Has anyone out there experienced this? He is only 9 months old. And a whopping 12 pounds!!

So much for a purse puppy! We have researched this and every web site says the same things, but they are all clinical. I need some real experience.
He will have his surgery this weekend if all is well
Thanks
Tiffany