Muscle Anatomy

vastus medialis

The vastus medialis is located on the medial (inner) side of the thigh, somewhat lower than the lateralis, and is partially covered by the rectus femoris.


The vastus medialis originates on the medial side of almost the entire shaft of the femur.


The vastus muscles run almost the entire length of the femur and converge into the quadriceps femoris tendon, which attaches to the patella bone (kneecap).


Knee joint extension.