1993 Mazda 323 BROKEN CV JOINT

MY 1993 MAZDA 323 MADE A LOUD BANGING AND KNOCKING NOISE WHEN I MADE A LEFT HAND U TURN AND NOW IT FEELS LIKE SOMETHING IS BROKEN IN THE FRONT END OF THE CAR IT MAKES A LOUD BANGING NOISE LIKE SOMETHING BROKE AND THE 2 PIECES ARE HITTING AGAINST EACH OTHER I WAS TOLD COULD POSSIBLY BE THE CV JOINT OR WORSE. HOPING YOU CAN SHED SOME LIGHT ON WHAT THE PROBLEM MAY BE AND APPROXIMATE COST FOR FIXING. THANK YOU.