You are it is considered to have a flat foot when the entire sole of the foot is in contact or near contact with the ground while standing. The result is that there is no arch to the foot. Flatfoot is a common disorder. It is a complex deformity, and there are types and stages that vary in degree of symptoms and disability. Flatfeet are also referred to as pes planus, posterior tibial tendon dysfunction, and fallen arches. There are two general types of flatfoot; flexible flatfoot and rigid flatfoot. If a person is sitting or standing on their toes and they have an arch that disappears when they stand with the entire foot on the ground they have a flexible flatfoot. If there is no arch, whether sitting or standing, they have a “rigid” or “true” flatfoot.
Associations of flat foot are; Gait Cycle; Hereditary, muscle and tendon structure, Excessive standing, walking, jumping, or running. Walking gait, poor footwear,neurological dysfunction, injury, obesity, diabetes Tarsal coalition: A condition where joints bridge grow together restricting or prohibiting movement of that joint. Hereditary, gait, footwear, muscle and tendon structure, neurological dysfunction,etc. Symptoms include chronic foot and ankle pain-fatigue, medial bunion (hallux valgus) poor balance and posture, abnormal foot propulsion affecting walking and sporting performance(foot structure inability to lock and propel correctly) general knee and back pain.