What is the role of sEMG in the workup of patellofemoral syndrome (PFS)?

Updated: Sep 15, 2020
  • Author: Noel F So, MD, FAAPMR; Chief Editor: Consuelo T Lorenzo, MD  more...
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A study by Ferrari et al indicated that surface electromyography (sEMG) can be used in patients with referred anterior knee pain to diagnose PFS. In the study, which involved 22 persons with PFS and 29 persons without pain, the investigators found that by using the medium frequency ̶ band parameter, it was possible to differentiate between the two groups. They concluded that EMG signals from the vastus lateralis and vastus medialis muscles with referred anterior knee pain can be used in the diagnosis of PFS. [10]

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