Plantar fasciitis is the inflammation of the plantar fascia, which is the ligament that connects the heel bone to the toes. People more at risk of developing fasciitis are those who play sports very often, obese people, patients with tight Achilles tendon, or those with problems in the arch of the foot. Generally, this injury causes pain and stiffness in the bottom of the heel, although the sole can also ache or burn. The treatment involves medication, stretching the heel and toe, night splints, rest and wearing proper shoes. However, in some cases the patient requires surgery.