Vastus intermedius muscle

Last revised by Reabal Najjar on 27 Dec 2022

The vastus intermedius muscle is one of the four quadriceps muscles in the anterior compartment of the thigh. It is located inferior to the rectus femoris muscle and between the vastus medialis and vastus lateralis muscles.

The vastus intermedius muscle originates from the upper two-thirds of the anterior and lateral surfaces of the femur.

Along with other muscles of the quadriceps femoris, the vastus intermedius inserts on the tibial tuberosity via the patellar ligament. Also, it attaches to the base of the patella.

Like the other muscles forming the quadriceps femoris, the vastus intermedius muscle also extends the leg at the knee joint.

The vastus intermedius muscle receives blood supply from the lateral circumflex femoral and deep femoral arteries.

The vastus intermedius is innervated by the muscular branches of the femoral nerve (L2 - L4) that arises from the lumbar plexus.

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Cases and figures

  • Case 1: undifferentiated pleomorphic sarcoma
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  • Figure 1: anterior thigh muscles (Gray's illustration)
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  • Figure 2: thigh muscles: cross sectional anatomy
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  • Figure 3: femoral arteries (Gray's illustration)
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