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Critically Appraised Topic

The Effectiveness of Electromyographic Biofeedback Supplementation During Knee Rehabilitation After Injury

343 – 351

Regaining neuromuscular control of the quadriceps muscle group is a major focus of therapeutic exercise programs for knee injuries. A key component in restoring neuromuscular control involves increasing muscle strength. It is important to restore quadriceps strength to improve function and increase stability of the knee. Electromyographic (EMG) biofeedback is a tool used to estimate the electrical activity taking place in the muscle and is used to give visual and/or audio feedback to the patient about activity levels in the muscle of interest. There is conflicting evidence regarding the effectiveness of EMG biofeedback for improving muscle function when used in as part of rehabilitation protocols. However, many clinicians continue to use this therapy as a supplement to conventional therapeutic exercise.

Authors: Carrie Silkman, Jennifer McKeon