Clarke turned his ankle during training on Monday but said he is feeling no ill-effects and batted in the nets ahead of the match in Adelaide, starting on Thursday.
"The ankle feels fine," Clarke said after training. "I think not training yesterday obviously gave me an extra day.... I feel fine".
Clarke named an unchanged team following Australia's 381-run victory in the first Test in Brisbane.
All-rounder James Faulkner is again 12th man, with spinner Nathan Lyon likely to play a leading role on an Adelaide Oval drop-in pitch that is anticipated to take turn.
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He also said Australia would not change their aggressive approach from the first Test, which was marred by verbal clashes with the tourists.
"We will continue to play a tough brand of cricket on the field... We all know there is a line we can't cross," he said.
Australia: David Warner, Chris Rogers, Shane Watson, Michael Clarke (capt), Steve Smith, George Bailey, Brad Haddin, Mitchell Johnson, Peter Siddle, Ryan Harris, Nathan Lyon, James Faulkner (12th man).