Basically, to keep it short:
We noticed that he was limping last weekend and he couldn't climb at all (not that he's a great climber at the best of times but he can easily get onto my bed so when he was struggling with that, I knew something was wrong). He would walk a few metres and then sit down. So we took him to the vet and the vet thinks that something might have fallen on him, which has caused some soft tissue damage and possibly minor nerve damage.
So now Loki has to stay in a playpen and he has two different medicines/drugs that he needs (one for pain, one to help get his bowels moving). He's getting a bit better though - he's still playful and *wants* to move, he just can't get very far. The vet thinks it'll be about six weeks until he can move comfortably again
