Vastus Intermedius

Description

E. Anterior attachments of extensors of knee. F. Quadriceps femoris. G. Vastus intermedius. H. Posterior attachments of extensors of knee. I. Vastus medialis and lateralis.

The different muscles in the quadriceps. The vastus intermedius is not visible from the front view. On the left: Original image is extracted from Gray and Lewis (1918). On the right: T1W MRI of a right leg from MUST dataset.

Origin

• Anterior and lateral surface of Femur

Insertion

• Patella via the quadriceps tendon

Actions

• Extension of Knee

Vascular Supply

• Lateral Circumflex Femoral Artery,
• Descending branch of Lateral Circumflex Artery

Innervation

• Femoral Nerve

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Clinical Significance

Part of the Quadriceps Femoris

• Rectus Femoris
• Vastus Lateralis
• Vastus Intermedius
• Vastus Medialis

Pathology

• Quad Strain
• Quad Tendinitis
• Quad Contusion
• Acute Compartment Syndrome

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See Also

• Thigh Anatomy Main
• Hip Pain Main
• Knee Pain Main

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