SAN DIEGO, July 20, 2020 /PRNewswire/ — NuVasive, Inc. (NASDAQ: NUVA), the leader in spine technology innovation, focused on transforming spine surgery with minimally disruptive, procedurally integrated solutions, today announced certain preliminary unaudited results for the second quarter 2020. Based on preliminary unaudited financial results, the Company estimates second quarter 2020 net sales to be in …