Hey, remember the Matt Kemp trade that happened last Thursday? Well, it didn’t really happen so much as news of a pending agreement was reported a week ago. For the last seven days, details have been getting finalized, which included having Matt Kemp take a physical. He did that on Tuesday. Apparently, it didn’t go very well.

SD in perfect position to squeeze LAD for more money in Kemp deal: Kemp's medicals ugly, LAD has cash and needs Kemp deal more than SD does.

— Buster Olney (@Buster_ESPN) December 18, 2014

The holdup in Matt Kemp trade is because the physical revealed arthritis in both hips. The #Padres continue to consult medical experts.

— Bob Nightengale (@BNightengale) December 18, 2014

Arthritis in both hips. This isn’t something you hear too often, and it brings back memories of Albert Belle, who was one of the game’s most dominant hitters until an arthritic hip ended his career after the 2000 season. Belle’s decline was swift, as he went from a 165 wRC+ to a 139 wRC+ to a 104 wRC+ in his final three seasons, finally retiring after his age-33 season when it became clear that he wasn’t going to be able to play through the condition any longer.

Matt Kemp is only 30, and looked fine at the plate in the second half of last season, so maybe it all sounds scarier than it actually is. Maybe he’ll be fine, and the Dodgers will just kick in some extra money to get the deal done.

But this already looked like a bad deal for San Diego, and Kemp was already a poor fit for their park. Arthritic hips seem like the kind of thing that would make a defensive bounceback less likely, and on the surface, it would seem to serve Kemp’s interests to have him end up on an AL team where he could spend the bulk of his time at DH.

But it’s probably not as easy as the Padres just telling the Dodgers they changed their minds. As Ken Rosenthal and others have noted, Kemp’s medical information is protected by HIPAA, and should not have been released publicly, even anonymously. It would be difficult for the Dodgers to prove that the Padres leaked the information, but at the very least, backing out of the deal at this point might serve to make other teams reluctant to trade with San Diego in the future. A.J. Preller already had a reputation as a polarizing executive who didn’t always play by the rules during his days in Texas, and leaving the Dodgers holding a bag of arthritic hips wouldn’t be a good way to show everyone that he’s changed his stripes.

We should find out today whether this deal is happening or not. No matter what happens, this might get ugly for San Diego, either on the field or off of it.