How did Larry Nassar get away with molesting girls for so long? He ‘groomed’ colleagues, doctor says. It took nearly 30 years for Steven Karageanes, a former president of the American Osteopathic Academy of Sports Medicine, to understand how Larry Nassar used him as a pawn. “He groomed me for 28 years to help him commit sexual assault,” he said. Nassar had “devious, underhanded and sickening ... Machinations,” he said. Ref. USAToday.