Did you know your foot posture and footwear could be the cause and solution to your knee pain? The picture below demonstrates the impact foot posture can have on the knee, as well as the ankle, hip and even lower back! What causes poor foot posture? Poor foot posture can be caused by: Loose ligaments within the foot and ankle Weak muscles which control the arch of the foot (in particular the tibialis posterior, peroneals, flexor digitorum longus and flexor hallucis longus) Re