Are you sure he doesnt mean the inner joint on the track arm!? These would be prone to wear, but all you need to replace is the track control arm!!
Mods : .:R32 front bumper, 18" RS4's, 130 turbo, chipped NI remap, anni headlights, debadged rear, sharan badge mod, german plates, black grille - with more to come
VW technician - complete with mobile diagnostics, all VAG work carried out.