Pietrosimone B, Troy Blackburn J, Harkey MS, Luc BA, Hackney AC, Padua DA, Driban JB, Spang JT, Jordan JM. Walking Speed As a Potential Indicator of Cartilage Breakdown Following Anterior Cruciate Ligament Reconstruction. Arthritis Care Res (Hoboken). 2016 06; 68(6):793-800.