Sever's disease is a common cause of heel pain in growing kids, especially those who are physically active. It usually occurs during the growth spurt of adolescence, the approximately 2-year period in early puberty when kids grow most rapidly. This growth spurt can begin any time between the ages of 8 and 13 for girls and 10 and 15 for boys. Sever's disease rarely occurs in older teens because the back of the heel usually finishes growing by the age of 15, when the growth plate hardens and the growing bones fuse together into mature bone. Sever's disease is similar to Osgood-Schlatter disease, a condition that affects the bones in the knees.
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.
Sever's Disease is most commonly seen in physically active girls and boys from ages 10 to 15 years old. These are the years when the growth plate is still ""open,"" and has not fused into mature bone. Also, these are the years when the growth plate is most vulnerable to overuse injuries, which are usually caused by sports activities. The most common symptoms of this disease include. Heel pain in one or both heels. Usually seen in physically active children, especially at the beginning of a new sports season. The pain is usually experienced at the back of the heel, and includes the following areas. The back of the heel (that area which rubs against the back of the shoe). The sides of the heel. Actually, this is one of the diagnostic tests for Sever's Disease, squeezing the rear portion of the heel from both sides at the same time will produce pain. It is known as the Squeeze Test.
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
The treatment of Sever's disease depends upon the severity of symptoms experienced by the patient. Care is initiated with a simple program of stretching and heel elevation to weaken the force applied to the calcaneus by the Achilles tendon. If stretches and heel elevation are unsuccessful in controlling the symptoms of Sever's disease, children should be removed from sports and placed on restricted activities. Mild Symptoms. Wear a 3/8 heel lift at all times (not just during physical activity). It is important to use a firm lift and not a soft heel pad. Calf stretches 6/day for 60 seconds each. Calf stretches are best accomplished by standing with the toes on the edge of a stretching block. Moderate Symptoms. Follow the directions for minor symptoms and decrease activity including elimination of any athletic activity. In addition to stretching by day, a night stretching splint can be worn while sleeping. Severe Symptoms. Follow the directions for mild and moderate symptoms. Children should be removed from sports activities such as football, basketball, soccer or gym class. A below knee walking cast with a heel lift or in severe cases, non-weight bearing fiberglass cast, may be indicated for 4-6 weeks. The cast should be applied in a mildly plantar flexed position. Cam Walkers should not be used for Sever's Disease unless they have a built in heel lift.