Alright, I just got back from the vet. They took two X-rays of his left front leg and all the joints look good. What she did find was a thickening or inflamation of the bone marrow just above his wrist. I forget the technical term she used. Something with an E.
She says this is common with dogs around 9 months of age, but not unheard of with a dog his age. He's about a year and four months. She said that it should heal on it's own in a month or two. So thats good.
So all I had to pay for was the doctors visit $36 and two x-rays $87. Not too bad considering I was expecting to pay well over $200 for this. So I guess I'm happy