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).
Overuse and stress on the heel bone through participation in sports is a major cause of calcaneal apophysitis. The heel?s growth plate is sensitive to repeated running and pounding on hard surfaces, resulting in muscle strain and inflamed tissue. For this reason, children and adolescents involved in soccer, track, or basketball are especially vulnerable. Other potential causes of calcaneal apophysitis include obesity, a tight Achilles tendon, and biomechanical problems such as flatfoot or a high-arched foot.
Sever condition causes pain at the back of the heel. The pain is increased with plantar flexion of the ankle (pushing down with the foot as if stepping on the gas), particularly against resistance. Sever condition also causes tenderness and swelling in the area of the pain.
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
Treatment is primarily supportive, with rest, pain management, and activity modification. Activity modifications include the addition of low-impact activities. Gel heel cups are sold over the counter and can be used intermittently to help reduce shock in the heel, as well as take tension off of the tight Achilles?s tendon complex. Proper stretching and strengthening activities should be preformed routinely even during periods of no pain. A large study showed that approximately 85% of children affected by Sever?s disease return to full activity within a two-month time period after starting treatment.
The best way to prevent Sever's disease is to make sure that your child wears shoes that fit properly. The heel portion of the shoe should not be too tight, and there should be good padding in the heel. It may help to put extra heel pads in your child's shoes. Some children simply get too much physical activity. For example, they may play on too many teams or practice for too long. Their heel pain is a message to slow down.