Why does my cat still limp even though he is not hurt!?!?

 
Why does my cat still limp even though he is not hurt!?!?
Well,my cat Jiggy got an big cut on his back paw a few months ago but bow it is completely healed up!But he still limps does anyone have a clue at all?
He is still in pain. Consult your veterinarian to find out what is causing the pain and how to correct it.
How do you KNOW he's not hurt? Did you ever bother to get him to a vet????