Tennessee Code Title 27. Appeal and Review § 27-1-121

(a) When cases are heard and determined by judges of the court of appeals and court of criminal appeals who do not reside in the grand division in which the cases arose and were heard, it shall not be necessary for such judges to be present in person when decisions in such cases are announced; and it shall be lawful for the minutes containing the judgments or decrees in such cases to be signed by the judges residing in the grand division in which such cases arose and were heard or tried.

(b) A written opinion and findings signed by the judges who heard and determined the case shall be filed with the clerk of the court before the judgment or decree is entered.

(c) The judgments and decrees so entered and authenticated shall be, in all respects, as valid as if they were authenticated by the signatures, to the minutes, of the judges rendering them.