Pacers coach Jim O'Brien says neither should be out for an extended period of time.
Collison is third on the team with 15.1 points per game, leads the team in assists and shoots 92 percent from the free throw line. Veteran T.J. Ford started in his place and had six points, five assists and four rebounds in 37 minutes of action.
Hansbrough, who missed most of last season with vertigo, is averaging 8.4 points and shooting 57 percent from the field.
Information from The Associated Press was used in this report.