Lateral dislocation of patella is prevented by
The lateral border provides inseion to vastus lateralis in its upper one-third or half. The medial border provides inseion to the vastus medialis in its upper two-thirds or more. Ref : B D Chaurasia's Humsn Anatomy , seventh edition , volume 2 , pg, no. 22
Rectus femoris
Vastus medialis
Vastus lateralis
Vastus intermedius
Lower limb