The control bar with home button, step back button and settings doesnt

Hi

I dropped my STUDIO 5.0 S II and the control bar with home butt. Back butt and settings butt doesnt work. I can turn on amd off, i can browse internet but only without them and when i have to go back or try to go into PHONE SETTINGS i have to turn it off and start all over again. I hate to chuck it.PLEASE HELP