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Muscle
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 Click on image for larger view |
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Name
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Quadriceps Femoris
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Subdivision
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vastus medialis
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Muscle Anatomy
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Origin
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Distal half of the intertrochanteric line, medial lip of line aspera, proximal part of medial supracondylar line, tendons of adductor longus and adductor magnus and medial intermuscular septum. | |
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Insertion
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Proximal border of the patella and through patellar
ligament.
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Function
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Extension of the knee joint.
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Recommended sensor placement procedure
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Starting posture
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Sitting on a table with the knees in slight flexion
and the upper body slightly bend backward.
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Electrode size
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Maximum size in the direction of the muscle fibres:
10 mm.
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Electrode distance
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20 mm.
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Electrode placement
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- location
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Electrodes need to be placed at 80% on the line
between the anterior spina iliaca superior and the joint space in
front of the anterior border of the medial ligament.
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- orientation
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Almost perpendicular to the line between the anterior
spina iliaca superior and the joint space in front of the anterior
border of the medial ligament.
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- fixation on the skin
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(Double sided) tape / rings or elastic band.
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- reference electrode
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On / around the ankle or the proc. spin. of C7.
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| Clinical test | Extend the knee without rotating the thigh while applying pressure against the leg above the ankle in the direction of flexion. | |
| Remarks |
The SENIAM guidelines include a separate sensor
placement procedure for the vastus lateralis and the rectus femoris
muscle.
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