Tasman lost 35-13 to Canterbury in Saturday's premiership decider in Christchurch, with Taufua having to be replaced in the 41st minute after suffering what appeared to be a broken arm in the game's opening minutes.
Tasman Rugby Union chief executive Tony Lewis confirmed that Taufua had an operation on Sunday and that he could be out of action for up to 12 weeks.
However, Lewis said that the injury might also be a blessing for Taufua after the rugged No 8 had taken plenty of physical punishment during Tasman's premiership campaign.
