Trauma or injury: Occasionally, fallen arches may be due to fracture, sprain or direct blow to the tendon.
Age: The risk of developing fallen arches increases with age. Research has suggested that middle aged women are more commonly affected.
Being overweight: If a person has flat feet, greater weight can cause excessive stretching on the tibialis posterior tendon and cause fallen arches.
Inflammatory arthritis: Inflammation and degeneration of the tendon, which may result in the tendon tearing.
Footwear: Inadequate support from footwear may also be a contributing factor.
These factors may cause the arch of the foot to collapse, hence “fallen arches”, and change the position of the bones of the foot and ankle.