I tripped on a badly sunken pavement Wednesday evening,,,can i claim compensation?

i was walkin my dog and tripped on a sunken pavement..about 2" deep....I went to hospital, have bruised my knees, hurt my shoulder and broken my ankle....Should I make a compensation claim, and if so, how!? how much would I be expected to be paid out, or would it just a waste of time...I was supposed to start a new job on Monday, so all this is so upsetting to me.