Vastus Medialis - Muscle Physiology & Functional Anatomy

 

Vastus Medialis  Muscle

 

Anatomy

 

Origin:

  • Medial surface of femur (lower intertrochanteric line, spiral line, medial linea aspera & medial intermuscular septum)

Insertion:

  • Medial patella (via ligamentum patellae into tubercle of tibia)



Major Arteries:

  • Lateral femoral circumflex artery

 

Neural Innervation:

  • Femoral nerve

 

Trigger Points:

Vastus Medialis Trigger Points

 

 

Physiology

 

Concentric Functions:

  • Knee extension

 

Eccentric Functions:

  • Decelerates knee flexion, abduction & internal rotation

 

Isometric Function:

  • Dynamically stabilizes the knee during functional movements

  • Stabilizes patella

 

Related Muscles

 

Antagonists:

 

 

Exercises:

 

 


More Images of the Vastus Medialis Muscle

vastus medialis

Cross Section of Vastus Medialis Muscle


More Information about the Vastus Medialis Muscle

The vastus medialis muscle is one of the 4 muscles in the quadriceps femoris muscle group which also includes the vastus lateralis, vasus intermedius and biceps femoris.  The vastus medialis is commonly referred to as the "teardrop" muscle.

 

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