I thought as much. In Polish when we say "zraniłem się w noge" we mean that it was our fault , in other words " no one else caused a pain", right ? If we wanted to say that a pain we fell had been caused by someone else we'd say "wpadł na mnie i upadlem" or sth like this, right? Polish is all Greek to my so I have decided to learn English :)))
* Hence I'd write I hurt my leg instead of I got my leg hurt:)