The middle quadriceps
Vastus intermedius · musculus vastus intermedius
The deep quadriceps muscle hidden under the rectus femoris.
What it does
The vastus intermedius lies directly on the front of the femur, underneath the rectus femoris. It joins the other three quadriceps in the tendon to the kneecap and helps straighten the knee.
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.