not sure whats wrong with cats leg?

I have a large gray tabby that I rescued and got fixed and he started limping on his front leg. I took him to the vet....he examined him and said that he dint feel any breaks. Gave him a shot of steroids and he said he should be better ....but hes not. Now he is hissing and trying to run and hide. And now his leg is swollen ......his paw and a little up from there...I believe he is in pain.....I need to take him back to the vet.....anyone have any ideas of what it might be...I feel so sorry for him

Oh I'm so sorry! If the vet didn't do an xray, it'd be hard for him to know for sure. But given it's swollen, it sounds like maybe an abscess? Is he allowed outside? Could he have gotten bitten, or some kind of small puncture wound the vet didn't see?

I don't know where you live... perhaps some kind of bug bite?

Clearly he needs to go back to the vet though. If you have options, I'd consider a different one.

Vibes for your kitty...

I'm wondering if it might be a problem with a toe, or even a claw.