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Muscle
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 Click on image for larger view |
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Name
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Semitendinosus
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Subdivision
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Muscle Anatomy
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Origin
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Tuberosity of ischium by tendon common with long head of biceps femoris. | |
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Insertion
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Proximal part of medial surface of body of tibia
and deep fascia of leg.
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Function
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Flexion and medial rotation of the knee joint. Semitendinosus
also extends and assists in medial rotation of the hip joint.
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Recommended sensor placement procedure
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Starting posture
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Lying on the belly with the face down and the thigh
held down on the table, in medial rotation, and the leg medially
rotated with respect to the thigh. The knee needs to be flexed to
less than 90 degrees.
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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 50% on the line
between the ischial tuberosity and the medial epycondyle of the
tibia.
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- orientation
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In the direction of the line between the ischial
tuberosity and the medial epycondyle of the tibia.
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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 | Press against the leg proximal to the ankle in the direction of knee extension. | |
| Remarks | ||