The school announced Thursday that Johnson had problems in practice this week and underwent a medical evaluation. Doctors found that Johnson risked a permanent spinal cord injury if he continued to play contact sports.
Head trainer Ron Courson says it's fortunate the condition was discovered before Johnson sustained a ''possible catastrophic injury,'' and that he still should be able to have ''a normal life.''
Georgia coach Mark Richt says Johnson will remain on scholarship through his graduation. The 5-foot-11, 174-pounder played in Georgia's first four games and was credited with five tackles.
The 13th-ranked Bulldogs (3-1, 1-1 Southeastern Conference) face Vanderbilt on Saturday.