front axel popped out I need help

[93awdrivera/t]

Recently my car has been knocking when I make turns with a lot of power. Yesterday I was at a stop sign whenI turned the wheel and bearings and a broken bearing cage popped out of the driver side of my car. Then my auto transmission shifter started to rattle and make a grinding noise. I put the car in park and the noise stopped. But soon as I put the car in gear it makes a grinding noise and won't move it'll just rev. ONce I got the car home I checked the side were the bearing came out and my axel wasn't even in the wheel. it was rubbing against it the rim.
Is there a fix for this or will I have to go and get a new axel

 

[PogiTSI]

isnt there suposed to be a Castle nut holding the Axle from sliding out???? is it there???? it probly isnt, get one.