An apparatus for thermally treating torn tissue includes a cannula, a balloon, and one or more electrically conductive electrodes. The cannula includes a hollow interior that is configured to receive a fluid. At least a portion of the balloon is positioned within the hollow interior of the cannula, and fluid received through the hollow interior of the cannula inflates the balloon. The one or more electrically conductive electrodes are mounted to the balloon and are configured to deliver heat to tissue.