Electromyographic biofeedback–controlled exercise versus conservative care for patellofemoral pain syndrome

Efficacy of Nonsurgical Interventions for Anterior Knee Pain

“…Pooled data from two studies [57,58] showed no significant benefit of using EMG biofeedback with exercise at four weeks (-0.21, -0.64 to 0.21), or at eight to 12 weeks (-0.22, -0.65 to 0.20).…”

Evaluation of the Scope and Quality of Systematic Reviews on Nonpharmacological Conservative Treatment for Patellofemoral Pain Syndrome

“…Thomee 73 Low-quality RCT Significant reduction in frequency of pain in isometric and eccentric exercise groups at 3 and 12 mo, but no difference between groups Dursun 24 Low-quality RCT No significant difference in outcomes exercising with and without EMG biofeedback…”

The Effects of Closed Kinetic Chain Exercise Using EMG Biofeedback on PFPS Patients` Pain and Muscle Functions

“…Powers [25] noted that VMO/VL muscle activity ratios were lower in PFPS patients than in normal people. Dursun et al [13] applied universal treatment and treatment in combination with EMG biofeedback to 60 PFPS patients for improvement in balance between the VMO and VL, and reported that VMO/VL muscle activity ratios significantly increased in the group which received treatment in combination with EMG biofeedback compared to the control group. In the present study, all the groups' VMO/VL muscle activity ratios became close to 1:1 after the intervention, but the muscle activity ratios significantly increased in the closed kinetic exercise group which used EMG biofeedback relative to the closed kinetic exercise group.…”

“…In order to selectively maintain muscle activity of the VMO at maximal level, EMG biofeedback (Mymed 132, Enraf Nonius, Netherlands) was used [13]. The monitor was placed in front of the subjects so that they may identify EMG biofeedback signals easily.…”