Do Mandatory Face Shields Reduce the Number of Craniomaxillofacial Injuries in the National Hockey League?

Purpose: The purpose of this study was to analyze the effectiveness of the National Hockey League's (NHL) mandatory visor policy on the number and type of craniomaxillofacial (CMF) injuries.

Materials And Methods: A cross-sectional study was designed using the 2 databases: the NHL Injury Viz and the Pro Sports Transactions. CMF injuries and player characteristics from the NHL's 2009-2010 through the 2016-2017 seasons were obtained.