WARSAW, Ind., Feb. 1, 2019 /PRNewswire/ — Zimmer Biomet Holdings, Inc. (NYSE and SIX: ZBH) today reported financial results for the quarter and full year ended December 31, 2018.  The Company reported fourth quarter net sales of $2.071 billion, an increase of 0.1% over the prior year period, and an increase of 1.6% on a constant currency basis.  Diluted loss …