Sever’s disease (calcaneal apophysitis) is an inflammatory condition that affects the heel bone (calcaneus). It happens frequently in young athletes between the ages of 10 and 13, causing pain in one or both heels when walking. Tenderness and swelling may also be present. Similar to another overuse condition, Osgood-Schlatter disease, Sever’s disease has occasionally been termed Osgood-Schlatter of the heel. In young people, the heel bones are still divided by a layer of cartilage. During the growth years, the bone is growing faster than tendons. This makes it likely that the heel cord will be applying great tension where it inserts into the heel bone. In addition, the heel cord is attached to an immature portion of the heel bone, the calcaneal apophysis. In young athletes, the repetitive stress of running and jumping while playing soccer and basketball may cause an inflammation of the growth center of the heel.
A big tendon called the Achilles tendon joins the calf muscle at the back of the leg to the heel. Sever?s disease is thought to occur because of a mismatch in growth of the calf bones to the calf muscle and Achilles tendon. If the bones grow faster than the muscles, the Achilles tendon that attaches the muscle to the heel gets tight. At the same time, until the cartilage of the calcaneum is ossified (turned into bone), it is a potential weak spot. The tight calf muscle and Achilles tendon cause a traction injury on this weak spot, resulting in inflammation and pain. Sever?s disease most commonly affects boys aged ten to 12 years and girls aged nine to 11 years, when growth spurts are beginning. Sever?s disease heals itself with time, so it is known as self-limiting. There is no evidence to suggest that Sever?s disease causes any long term problems or complications.
As a parent, you may notice your child limping while walking or running awkwardly. If you ask them to rise onto their tip toes, their heel pain usually increases. Heel pain can be felt in one or both heels in Sever’s disease.
Sever condition is diagnosed by detecting the characteristic symptoms and signs above in the older children, particularly boys between 8 and 15 years of age. Sometimes X-ray testing can be helpful as it can occasionally demonstrate irregularity of the calcaneus bone at the point where the Achilles tendon attaches.
Non Surgical Treatment
Sever?s disease is a self-limiting problem, because as your child grows the growth plate will eventually fuse with the main body of the heel bone. This happens at about 14 -15 years of age. Once foot growth is complete and the growth plate has fused, the symptoms will resolve. In the meantime, treatment by your Podiatrist will help your child return to normal sporting activities without heel pain slowing him/her down.
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. Some orthopedic surgeons will put the affected foot in a cast to immobilize it. However, while the disease does subside quickly, it can recur, for example at the s It is more common in boys, although occurs in girls as well. The average age of symptom onset is 9-11.