Vastus Intermedius

Some articles on vastus intermedius, vastus, intermedius:

Vastus Intermedius Muscle
... The vastus intermedius (Cruraeus) arises from the front and lateral surfaces of the body of the femur in its upper two-thirds, sitting under the rectus femoris muscle and ... The vastus medialis and vastus intermedius appear to be inseparably united, but when the rectus femoris has been reflected a narrow interval will be observed extending upward from ... of the quadriceps muscle group, the intermedius is the most difficult to stretch once maximum knee flexion is attained ...