[header] How to treat a cat with a broken claw [title] Wrap the cat up in a towel. [step] You're going to need to examine the cat's paw a bit, so you'll need to make sure it can't bite or scratch you. The best way is to have someone help you. 
Contain the cat by wrapping it securely in a towel or blanket. Hug it so it has trouble moving, and then examine the paw.