Jackson started the final eight games for the Trojans, who play Nebraska in the Dec. 27 Holiday Bowl in San Diego.
Jackson, who also returned kick-offs and played receiver, was voted the Pac-12 freshman defensive player of the year.
Lobendahn began the season as a starting guard.
He moved to left tackle after Chad Wheeler suffered a season-ending knee injury against Utah.
USC resumes practice for the Holiday Bowl on Wednesday.