Ok, here's some background.
A few months ago, Fletcher started occasionally coming in from playing holding his right front paw up and limping. The first few times, I checked him over for cuts, scrapes, sore spots, nothing. After a few minutes, he would put weight on it, and 20-30 minutes after it started, he wasn't even limping.
A couple of months ago, he started doing this more often, like a couple of times a week, so off to the vet we went. She checked him over, including shoulder, spine and neck. Looked for corns. Nothing. Did x-rays, the only thing that showed was some odd striations on the long bone (what would be the ulna in a person). I had her do a Valley Fever test anyway since I live in the VF capitol of the universe, negative. She suggested I put him on glucosamine, even though there was no sign of arthritis, and gave me some metacam to use as needed.
He has gotten much better, so obviously the glucosamine helped, he's back to just doing the paw thing occasionally, like this morning after he tear-assed around the yard with a stuffie.
I guess I'm just wanting to make sure I've covered everything. The odd marks on his bone worry me a little, but he is a bit pigeon toed and bow legged, and has become more so as he's gotten older (he's 7). He hasn't had a tick in the five years I've had him, but he could have been (probably was) exposed.