jack up the car so the whels of the ground grasp the wheel at 12 and 6 o clock and shake it if theres movment get some on have a look at the ball joint if its worn then you will see it moveing.
if you hold the wheel at 3 and 9 and shacke it and there movment have a look at the track rod end. if theres movment in bot possably wheel bearing.
thats how they are tested on an mot. if the rubber boots are split the joint may still be ok.