He will miss the remainder of the season.
Jackson went 15-for-38 against Temple, with a touchdown and an interception.
Austin Fontaine and Ellis McKennie will help fill in at the right guard spot.
"To be a premier program, you’ve gotta have premier facilities.”
The Terps were stuffed on two fourth-and-goal tries from the 1-yard line.
The Terps had chances late but couldn't punch them into the endzone.
The Terps are preparing for a rematch with Temple, a team that spoiled their 2-0 start in 2018.
McKennie played at center, left tackle and right tackle against Syracuse.
Pigrome returned to practice Wednesday.
Okonkwo and Mabry have three touchdowns combined in two games.