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 of tibia
Actions
Extends leg, draws patella medially
Nerve
Femoral nerve (L2–L4)
Note
Although they are not anatomically separate, the lower portion of the vastus medialis is referred to as the vastus medialis obiliquus (VMO). Its action is to stabilize the patella and prevent its lateral dislocation
