The deep inner hamstring
Semimembranosus · musculus semimembranosus
A broad inner hamstring that bends the knee and straightens the hip.
What it does
The semimembranosus lies under the semitendinosus on the inner back of the thigh. It runs from the sit bone to the back of the inner shin and bends the knee, straightens the hip and steadies the knee joint. Its name refers to its flat, membrane-like upper tendon.
Nearby
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Sources
Drafted with AI help; awaiting a human fact-check against these sources.
Open in the 3D atlas · Suggest a correction · Not medical advice.
3D models: Z-Anatomy & BodyParts3D (CC BY-SA 4.0 / 2.1 JP). Card text CC BY 4.0.