Plantar fasciitis is recognized as a stabbing pain on the bottom of a foot, near the heel, and can spread to the foot arch and the toes. It is caused by an injury of the plantar fascia, a connective band of tissue that runs from the heel bone to the toes and supports the foot arch. The causes of inflammation are frequent walking, running and standing on a hard surface, sports (volleyball, handball, football, athletics), shortened tibia, inflexible Achilles tendon, flat foot. Problems develop gradually, usually on one foot only. The pain is often the worst with the first few steps after awakening, although it can also be triggered by long periods of standing or rising from sitting. The pain is usually worse after exercise, not during it. Damage to the plantar fascia leads to inflammation of adjacent tissues and eventually to the formation of the heel spur and heel calcification. If not thoroughly repaired, these can develop into chronic problems. Due to the changed mechanics of walking, pain in the foot is compounded by issues with knees, hips and spine.