Steering Knuckle Spindle problems of the 2001 Audi A4

During 90,000 mile service, the mechanic discovered that both side spindles (steering knuckles) were cracked. According to the mechanic, the car was in a position to loose steering capability with those items cracked. They said it's rare to see both sides cracked. Tie rod ends were also replaced due to wear. I still have both spindles if needed. Mechanic replaced both spindles and tie rod ends. The vehicle is certified and still under warranty from Audi until the end of December. The vehicle had an 80,000 mile service done in April 2006.