Sever?s disease, also known as calcaneal apophysitis, is a common heel problem affecting children. This heel bone disorder is often painful, though it?s usually temporary and causes no long-term health effects. With Sever?s disease, the Achilles tendon repeatedly pulls on the heel?s growth plate, causing microtrauma (i.e. microfractures), inflammation, and swelling in the affected area. Sever?s disease is similar to Osgood-Schlatter disease, which affects the knee. Inappropriate footwear may be a contributing factor in the onset of this condition.
Inflammation occurs at the insertion of the achilles tendon into the back of the heel due to a number of reasons. One or several of the following may cause the initiation of Sever?s disease. Rapid growth spurt. Tight calf muscles. Change in footwear (soccer boots / athletic shoes no heel). Excessive rolling in of feet. Poor warm up routine. Remember this condition usually settles as the growth plate fuses within 6-12 months.
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.
To diagnose the cause of the child?s heel pain and rule out other more serious conditions, the foot and ankle surgeon obtains a thorough medical history and asks questions about recent activities. The surgeon will also examine the child?s foot and leg. X-rays are often used to evaluate the condition. Other advanced imaging studies and laboratory tests may also be ordered.
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.
Exercises that help to stretch the calf muscles and hamstrings are effective at treating Sever's disease. An exercise known as foot curling, in which the foot is pointed away from the body, then curled toward the body in order to help stretch the muscles, has also proven to be very effective at treating Sever's disease. The curling exercise should be done in sets of 10 or 20 repetitions, and repeated several times throughout the day.