Vastus medialis

The vastus medialis (also vastus medialis muscle, vastus internus, teardrop muscle, latin: musculus vastus medialis) is one of the quadriceps femoris muscles, located medially in the anterior compartment of the thigh.


The vastus medialis originates from the medial (inner) lip of linea aspera.


The vastus medialis inserts along with the other muscles of the quadriceps femoris onto the tibial tuberosity.


The main function of the vastus medialis is aiding in extension of the knee.


The vastus medialis is innervated by the femoral nerve.