Recording the vastii muscle onset timing as a diagnostic parameter for patellofemoral pain syndrome: fact or fad?
OBJECTIVE
In this literature review, relevant studies on electromyographic (EMG) onset timing of vastus medialis obliquus and vastus lateralis in people with and without patellofemoral pain syndrome (PFPS) were reviewed and discussed.


CONCLUSIONS
Studies had used diverse EMG signal processing and testing protocols, also only a half of their findings tended to support the notion that detection of EMG onset of the vastii muscles is diagnostically useful for identifying subjects with PFPS.
Wong
Yiu-ming
YM
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong. rswongym@polyu.edu.hk
D000328:Adult; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D046788:Patellofemoral Pain Syndrome / Q000175:diagnosis* / Q000503:physiopathology; D052097:Quadriceps Muscle / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D011999:Recruitment, Neurophysiological