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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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rectus femoris
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Muscle Anatomy
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Origin
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Straight head from anterior inferior iliac spine. Reflected head from groove above rim of acetabulum. | |
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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 and flexion of the hip
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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The electrodes need to be placed at 50% on the line
from the anterior spina iliaca superior to the superior part of
the patella
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- orientation
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In the direction of the line from the anterior spina
iliaca superior to the superior part of the patella.
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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 also a separate sensor
placement procedure for the vastus medialis and the vastus lateralis
muscle.
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