Vehicle was being driven straight on residential 2 lane street. heard a loud break/ loss of driving control of vehicle which pulled forcefully to the right. vehicle scraped off curb then back into oncoming traffic and coming to stopped. had lost all power to steering and operability of vehicle. put hazards on to avoid accident examined damage to right front pass side tire. appeared that stabilizer arm, snapped, ball joint disconnected. rim was not bent or damaged other than scrape to curb and tire was fully inflated. prior to malfunction driver did not hit any obstruction, debris or potholes on road. no damage to body of vehicle.