Why is the passenger front strut twisting from the top and making a pop noise?

STRUT IS MAKING POPPING NOISE DUE TO WHAT IS CALLED A BROKEN UPPER STRUT BEARING SHOCK ABSORBER,YOULL NEED TO REPLACE THE SPRING SEAT AND THE TWO NUTS THAT HOLD IT IN PLACE ASWELL,ONE IS STAR LOOKING ONE,AND THE OTHER IS YOUR STANDARD NUT.YOUR LOCAL VOLVO DEALER IS VERY AWARE OF THESES PARTS WHEN ASKED.