1. Brotzman M, Brent S, Kevin E. Handbook of orthopaedic rehabilitation, 2e 2007.
2. Lysholm score and tegner activity level in individuals with normal knees;Briggs;Am J Sports Med,2009
3. Rating systems in the evaluation of knee ligament injuries;Tegner;Clin Orthopaed Relat Res(1976-2007),1985
4. Management of patellofemoral pain syndrome;Dixit;Am Fam Physician,2007
5. Patellofemoral imaging;Merchant;Clin Orthopaed Relat Res®,2001