The rectus femoris is situated in the middle of the front of the thigh; it is extend the leg at the knee joint.
12.
Similarly, the rectus femoris is not dominant in knee extension when the hip is flexed since it is already shortened and thus suffers from active insufficiency.
13.
In essence : the action of extending the knee from a seated position is primarily driven by the vastus intermedius, and less by the rectus femoris.
14.
The anterior thigh muscles form the rectus femoris arises from the anterior inferior iliac spine and is thus the only of the four acting on two joints.
15.
Together with the rectus femoris muscle the vastus muscles form the quadriceps femoris muscle, a large fleshy mass which covers the front and sides of the femur.
16.
Anterior compartment muscles of the thigh include pectineus, sartorius, and the four muscles that comprise the quadriceps muscles-rectus femoris, vastus medialis, vastus intermedius and vastus lateralis.
17.
The anterior compartment of thigh contains the sartorius muscle and the four quadriceps : the rectus femoris, vastus lateralis, vastus intermedius and vastus medialis, along with the articularis genus.
18.
The hamstrings, adductor magnus and gluteus maximus work concentrically in the legs, while the psoas major, iliacus, and rectus femoris work eccentrically keeping the hip in neutral extension.
19.
Results showed significant increases in activation of tibialis anterior, gastrocnemius, soleus, rectus femoris, vastus lateralis, medial hamstring, biceps femoris, and gluteus maximus before foot strike.
20.
Due to being the deeper middle-most of the rectus femoris can, nor is it accessible to manipulate with massage therapy to stretch the fibres sideways as the vastus lateralis and vastus medialis are.
