Plantar fasciitis (heel enthesopathy) is inflammation in the plantar fascia due to microtrauma. Its occurrence is due to the shortening of the calf muscle, which causes tension in the plantar fascia and the development of pathological processes, namely the formation of abnormal growth. Most often, severe pain is felt at the attachment of the plantar fascia to the heel bone, sometimes on the inner or outer surface of the foot, and intensifies during walking or when pressure is applied to the heel.