WARSAW, Ind., Feb. 4, 2020 /PRNewswire/ — Zimmer Biomet Holdings, Inc. (NYSE and SIX: ZBH) today reported financial results for the quarter and year ended December 31, 2019.  The Company reported fourth quarter net sales of $2.126 billion, an increase of 2.6% over the prior year period, and an increase of 3.2% on a constant currency basis.  Net sales for …