Severs? disease usually presents with pain in either one or both of a sufferer?s heels. The area can be sore or tender, particularly first thing in the morning or after squeezing. Because the pain is focussed on the heel, an important part of the foot that makes contact with the ground through virtually all movement, sufferers often have to limp to alleviate their discomfort. The pain of Severs? disease is at its worst after any exertion that involves contact between a heel and the ground, particularly strenuous exercise like running or sport. The condition is caused by the wear and tear of structures in the heel, most significantly the heel bone and any attached tendons. Severs? disease is prevalent in young children who are extremely active, particularly as the heel and its attached tendons are still growing in the age group the condition most commonly affects (7-14).
During the growth spurt of early puberty, the heel bone (also called the calcaneus) sometimes grows faster than the leg muscles and tendons. This can cause the muscles and tendons to become very tight and overstretched, making the heel less flexible and putting pressure on the growth plate. The Achilles tendon (also called the heel cord) is the strongest tendon that attaches to the growth plate in the heel. Over time, repeated stress (force or pressure) on the already tight Achilles tendon damages the growth plate, causing the swelling, tenderness, and pain of Sever’s disease. Such stress commonly results from physical activities and sports that involve running and jumping, especially those that take place on hard surfaces, such as track, basketball, soccer, and gymnastics.
The typical patient is a child between 10 and 13 years of age, complaining of pain in one or both heels with running and walking. The pain is localized to the point of the heel where the tendo-Achilles inserts into the calcaneus, and is tender to deep pressure at that site. Walking on his toes relieves the pain.
Sever?s disease is diagnosed based on a doctor?s physical examination of the lower leg, ankle, and foot. If the diagnosis is in question, the doctor may order x-rays or an MRI to determine if there are other injuries that may be causing the heel pain.
Non Surgical Treatment
The doctor will talk with you about the best treatment plan for your child. As instructed, your child will Ice the heel 3-4 times a day for 15-20 minutes at a time. Use an ice pack or bag of frozen peas, or something similar. Never put ice directly on your child’s skin. A thin cloth or towel should be between your child?s skin and the ice pack. Take anti-inflammatory medication, such as ibuprofen, as directed. Decrease the amount of running and jumping he or she does. Stretch the heels and calves, as instructed by the doctor. Regular stretching can help prevent Sever?s from coming back. Use a ?heel cup? or a cushioned shoe insert that takes pressure off the heel. In some cases, a cast is placed on the foot and worn for several weeks.
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.