Kooiker L, Van de port I, Weir A, Moen M. Effects of physical therapist-guided quadriceps strengthening exercises for the treatment of patellofemoral pain syndrome: A systematic review. Phys Ther J. 2014; 44(6): 391-402.
A recent review of literature analyzed the results of multiple research studies comparing the effects of guided quadriceps strengthening exercises by a physical therapist to reduce knee pain and improve function versus the patient just receiving generalized advice and information about physical activity and exercise with no other guidance. Results provided strong evidence for the use of guided quadriceps strengthening exercises 3 times a week for the treatment of patellofemoral pain syndrome. The type of exercises did not matter (weight bearing vs non-weight bearing). Quadriceps strengthening exercises in combination with other interventions such as taping for improved alignment can further improve pain reductions for the long term.