Spokesman Mark Kimble told The Associated Press on Tuesday that Giffords had been using a cane as recently as June but is now walking without it.
His comments came after the Arizona Daily Star in Tucson reported that Giffords' District Director Ron Barber said the congresswoman was walking with a cane.
Kimble says Barber's comments to the Democrats of Greater Tucson on Monday were based on the last time he saw her in June.
Kimble says that Giffords is writing left-handed. She does not have full use of her right side after being injured in a Jan. 8 mass shooting in Tucson that killed six and injured 12 others.