"Looks like I'll be out of the rest of @IPL at this stage! The scan showed a bit of damage, absolutely shattered!" Finch tweeted today.
Finch did not take further in the match at Ahmedabad yesterday after retiring hurt on 10. Mumbai Indians eventually lost the match by seven wickets.
The Australia had scored 5 and 8 in the first two matches. Mumbai Indians' is Finch's fifth franchise in the IPL.