Trek Bicycles is recalling almost 1 million bicycles due to an apparent flaw in the design of quick release skewers equipped on bikes manufactured between 2000 and 2015, according to the U.S. Consumer Product Safety Commission. Several injuries have been reported including a fractured wrist, facial injuries and at least one incident in which a rider was rendered paralyzed, according to U.S.A. Today.
The problem is that the front quick release skewer on the recalled bikes opens past 180 degrees. When left opened during riding -- a frequent mistake made by less experienced riders -- the skewer can become lodged into disk brakes rotors causing the bike to stop suddenly hurling the rider forward. Trek is offering to replace the offending skewers with skewers that cannot open past 180 degrees free of charge to owners who bring their bikes to authorized dealers.
For a further description of the problem please see the video below, courtesy U.S.A. Today: