Effects of Ankle Dorsiflexion on Vastus Medialis Oblique and Vastus Lateralis Muscle Activity During Straight Leg Raise Exercise with Hip External Rotation in Patellofemoral Pain Syndrome

Objectives: The purpose of this study was to investigate the effect of combined ankle dorsiflexion [DF] and straight leg raise with hip external rotation [SLRER] on the vastus medialis oblique [VMO] and vastus lateralis [VL] muscle activity and VMO/VL ratio in subjects with patellofemoral pain syndrome [PFPS] and healthy normal control [HNC] subjects.