Quadriceps Muscles: Rectus femoris, Vastus Lateralis, Vastus Medialis, Vastus intermedius
Introduction : The four 4 sub-components are: Rectus femoris : Origin : The rectus femoris is a fusiform muscle that contains two heads. It originates from two sites on the ilium; the anterior inferior iliac spine (AIIS)(straight head) and supraacetabular groove (reflected head). The two heads unite into a common muscle belly that courses down…