Sever?s disease is particularly prevalent among active children between ages 8 and 15. Young boys and girls who play soccer and other sports in which footwear is inappropriate-i.e. too narrow in the toe box, too rigid, etc. are most commonly affected. Sever?s disease usually appears during the adolescent growth spurt-the 2-year period in early puberty where children grow the quickest. The adolescent growth spurt occurs between the ages of 8 and 13 in girls and 10 and 15 in boys. Teenagers over 15 years old rarely experience this heel problem, as heel bone growth is usually complete by this age. Sever?s disease usually self-resolves within 6 months of onset, though it can last longer.
The heel bone grows faster than the ligaments in the leg. As a result, muscles and tendons can become very tight and overstretched in children who are going through growth spurts. The heel is especially susceptible to injury since the foot is one of the first parts of the body to grow to full size and the heel area is not very flexible. Sever?s disease occurs as a result of repetitive stress on the Achilles tendon. Over time, this constant pressure on the already tight heel cord can damage the growth plate, causing pain and inflammation. Such stress and pressure can result from, Sports that involve running and jumping on hard surfaces (track, basketball and gymnastics). Standing too long, which puts constant pressure on the heel. Poor-fitting shoes that don?t provide enough support or padding for the feet. Overuse or exercising too much can also cause Sever?s disease.
The pain associated with Sever's disease is usually felt along the back of the heel and becomes worse when running or walking. In some children, the pain is so severe they may limp when walking. One of the diagnostic tests for Sever's disease is the "squeeze test". Squeezing both sides of the heel together will produce immediate discomfort. Many children feel pain immediately upon waking and may have calf muscle stiffness in the morning.
The doctor may order an x-ray because x-rays can confirm how mature the growth center is and if there are other sources of heel pain, such as a stress fracture or bone cyst. However, x-rays are not necessary to diagnose Sever?s disease, and it is not possible to make the diagnosis based on the x-ray alone.
Non Surgical Treatment
Orthotics, The orthotics prescribed are made to align the foot in its correct foot posture. This will reduce stress and force at the site of the growth plate of the heel bone. Rest and Ice the heel 20 minutes before and after sporting activity. Calf muscle stretching exercises.
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.