Vastus Medialis (Vast Med R)
The M. Vastus Medialis (Vastus Medialis) is a muscle of the thigh anterior region. It is responsible for knee extension, medial patellar stabilization (VMO - important for patellar tracking). This muscle is one of 26 with official SENIAM-recommended surface EMG electrode placement. This page documents the exact electrode position, anatomical attachments and a standardized test movement based on Hermens et al. (2000).
Knee extension, medial patellar stabilization (VMO - important for patellar tracking)
80% on line from ASIS to the anterior edge of the medial ligament
Orientation: Approx. 80 degrees to line ASIS-medial joint space
Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G. Development of recommendations for SEMG sensors and sensor placement procedures. J Electromyogr Kinesiol. 2000;10(5):361-74.
Based on SENIAM recommendations (Hermens et al. 2000). Not an official SENIAM product. See all references \u2192
Terminal knee extension (last 15 degrees) against resistance
Common use cases for surface EMG measurement of the M. Vastus Medialis:
80% on line from ASIS to the anterior edge of the medial ligament. Orientation: Approx. 80 degrees to line ASIS-medial joint space. Based on the official SENIAM recommendations (Hermens et al. 2000).
Terminal knee extension (last 15 degrees) against resistance. This movement is part of the SENIAM protocol for standardized contraction verification.
Yes. The M. Vastus Medialis is one of 26 muscles for which the SENIAM project has published official surface EMG electrode placement recommendations.
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