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#Repost @muscleandmotion (@get_repost) ・・・ The Hamstring Muscle Origin & Inserti…

#Repost @muscleandmotion (@get_repost)
・・・
The Hamstring Muscle
Origin & Insertion

A group of muscles that includes three large muscles: semitendinosus, semimembranosus, and the biceps femoris (has a long and a short head)
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Main action: Hip extension & Knee flexion

The semitendinosus and the semimembranosus muscles also perform an internal rotation at the knee (with a flexed knee) due to their insertion in the internal part of the tibia.

The biceps femoris also performs an external rotation at the knee (with a flexed knee), due to its insertion in the external part of the tibia.

This group of muscles is usually weak, compared to the anterior thigh muscles, and therefore need to be balanced. A proper balance is when the posterior thigh muscles can resist a load of two-thirds of the ability of the anterior thigh muscles.

For example, if we succeed in resisting a weight of 100 kg in a knee extension exercise, then with proper balance we will be able to resist 66.6 kg in knee flexion.

Actions:
– Knee flexion
– Hip extension
– Back extension at the hip joint (fixated thighs)
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👨‍🎓Learn Anatomy with clear & engaging 3D videos!
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