Sever’s disease or Calcaneal apophysitis is a condition that affects children between the ages of 10 and 13 years. It is characterized by pain in one or both heels with walking. During this phase of life, growth of the bone is taking place at a faster rate than the tendons. Hence there is a relative shortening of the heel-cord compared to the leg bones. As a result, the tension the heel-cord applies to the heel bone at its insertion is very great. Moreover, the heel cord is attached to a portion of the calcaneus (heel bone) that is still immature, consisting of a mixture of bone and growing cartilage, called the calcaneal apophysis, which is prone to injury. Compounding to this is the fact that all these changes are happening in a very active child, prone to overuse. The end result is therefore an overuse syndrome of injury and inflammation at the heel where the heel cord (Achilles Tendonitis) inserts into the heel bone (Calcaneal apophysitis).
There is no specific known cause of Sever?s disease. However, there are several common factors associated with the condition including. Tight calf muscles. Pronated foot type (rolled in towards the ankle). Children who are heavier. Puberty/growth spurts. External factors, e.g. hard surfaces or poor footwear. Increase in physical activity levels.
The most obvious sign of Sever’s disease is pain or tenderness in one or both heels, usually at the back. The pain also might extend to the sides and bottom of the heel, ending near the arch of the foot. A child also may have these related problems, swelling and redness in the heel, difficulty walking, discomfort or stiffness in the feet upon awaking, discomfort when the heel is squeezed on both sides, an unusual walk, such as walking with a limp or on tiptoes to avoid putting pressure on the heel. Symptoms are usually worse during or after activity and get better with rest.
It is not difficult for a doctor to diagnose Sever’s disease in a youngster or teenager. A personal history and a physical examination are usually all it takes to determine the cause of heel pain.
Non Surgical Treatment
Sever?s disease is believed to be the byproduct of repepitive stress and trauma to the growth plate in the calcaneous, or heel bone. The stress is from the pull of the Achilles tendon on the growth plate where the tendon attaches.
Sever?s disease is self-recovering, meaning that it will go away on its own when the foot is used less or when the bone is through growing. The condition is not expected to create any long-term disability, and expected to subside in 2-8 weeks. The disease may also take several years to stop, because it is often triggered by growing too fast. It is more common in boys, although occurs in girls as well. The average age of symptom onset is 9-11.