Martins Indi was taken off the pitch on a stretcher in the first half .
Martins Indi was transported to a Porto Alegre hospital for tests after being hurt in a heavy challenge by Australia 's Tim Cahill .
Martins Indi was taken off the pitch on a stretcher in the first half and transported to a Porto Alegre hospital for tests after being hurt in a heavy challenge by Australia 's Tim Cahill .