Quadriceps – Vastus intermedius

Origin Anterior and lateral surfaces of upper two-thirds of femur, lateral intermuscular septum, linea aspera, lateral supracondylar ridge Insertion Deep aspect of quadriceps tendon, then through patella to tibial tuberosity Actions Extends leg Nerve Femoral nerve...

Quadriceps – Vastus medialis

Origin Intertrochanteric line, medial lip of linea aspera of femur, medial intermuscular septum of adductor magnus and adductor longus, medial supracondylar ridge Insertion Medial border of the patella, then by patellar ligament into tibial tuberosity, medial condyle...

Quadriceps – Vastus lateralis

Origin Intertrochanteric line, inferior border of greater trochanter, gluteal tuberosity, lateral lip of linea aspera of femur Insertion Lateral margin of patella, then by patellar ligament to tuberosity of tibia Actions Extends leg Nerve Femoral nerve (L2–L4)...

Quadriceps – Rectus femoris

Origin Anterior head—anterior inferior iliac spine Posterior head—ilium above acetabulum Insertion Patella, then by patellar ligament to tuberosity of the tibia Actions Extends leg at knee joint, flexes thigh Nerve Femoral nerve (L2–L4) Note This...