The stability of the ankle joint is maintained by the following, except
A. i.e. Planter calcaneonavicular ligament Calcaneonavicular/ Spring ligament is most impoant ligament for maintaining the median longitudinal arch of foot but has nothing to do with stability of ankle joint because it is not around ankle joint
Plantar calcaneonavicular (spring) ligament
Deltoid ligament
Lateral ligament
Shape of the superior talar aicular surface