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Patellofemoral Pain Syndrome Alters Neuromuscular Control And Kinetics During Stair Ambulation, Naoko Aminaka, Brian G. Pietrosimone, Charles W. Armstrong, Andrew Mezsaros, Phillip A. Gribble

Faculty Publications - College of Physical Therapy

The aim of the study was to investigate differences in frontal plane knee kinetics, onset timing and dura-tion of the gluteus medius (GMed), adductor longus (AL), and vastus medialis oblique (VMO) during stair ambulation between those with and without patellofemoral pain syndrome (PFPS). Twenty PFPS patients and twenty healthy participants completed stair ambulation while surface electromyography (EMG), video, and ground reaction forces were collected. PFPS patients had a higher peak internal knee abduction moment during stair ascent, and a higher internal knee abduction impulse for both ascent and descent. During stair ascent, PFPS patients displayed earlier onset of the AL …