Origin;
The origin is the least movable part of the body, where the muscle is located. The origin of the rectus femoris is the anterior inferior iliac spine, which is called the AIIS. It also originates at the ilium.
Insertion;
The insertion is the most movable part. The insertion of the rectus femoris muscle is the quadriceps tendon to the base of the patella and onto the tibial tuberosity.