What Is Calcaneal Apophysitis? Calcaneal apophysitis is a painful inflammation of the heel?s growth plate. It typically affects children between the ages of 8 and 14 years old, because the heel bone (calcaneus) is not fully developed until at least age 14. Until then, new bone is forming at the growth plate (physis), a weak area located at the back of the heel. When there is too much repetitive stress on the growth plate, inflammation can develop. Calcaneal apophysitis is also called Sever?s disease, although it is not a true ?disease.? It is the most common cause of heel pain in children, and can occur in one or both feet. Heel pain in children differs from the most common type of heel pain experienced by adults. While heel pain in adults usually subsides after a period of walking, pediatric heel pain generally doesn?t improve in this manner. In fact, walking typically makes the pain worse.
With early puberty, the growth plate at the end of the heel develops, transforming cartilage cells into bone cells. This painful heel condition occurs during these growth spurts, when the heel bone grows more rapidly than the muscles and tendons of the leg. The discrepancy between rates of development causes excess pressure and tension to be placed upon the heel and it becomes less flexible. This condition affects active children the most. Due to the amount of exercise, more stress is placed upon the tendons which in turn causes more damage to the growth plate. The bone plates fully mature and harden by the time a child reaches the age of 15.
Adolescents suffering from Sever?s disease usually complain of pain at the back of their heel which is often worse after exercising. It is most common between the ages of 10-12 in boys and 8-10 in girls due to the rapid growth spurts that occur during this time. It can however happen anytime up until the age of 15. Whilst most people present with pain worse in one foot, it is very common to have symptoms in both feet.
This can include physical examination and x-ray evaluation. X-rays may show some increased density or sclerosis of the apophysis (island of bone on the back of the heel). This problem may be on one side or bilateral.
Non Surgical Treatment
Treatment of Sever’s disease will depend upon the severity of the condition. Parents can assist with the treatment of Sever’s disease by making sure their children reduce physical activity until some of the pain subsides. Losing weight can also help reduce pressure on the heel. It is important to consult a doctor if the pain persists. A physician may recommend flexibility exercises, custom shoe inserts, or anti-inflammatory medication. In some cases, a splint or cast may be necessary to immobilize the foot and give it a chance to heal. Most cases of Sever’s disease will resolve by the age of 16, when growing subsides. Fortunately, there are no known long-term complications associated with the disease.
This condition is self limiting – it will go away when the two parts of bony growth join together – this is natural. Unfortunately, Sever’s disease can be very painful and limit sport activity of the child while waiting for it to go away, so treatment is often advised to help relieve it. In a few cases of Sever’s disease, the treatment is not successful and these children will be restricted in their activity levels until the two growth areas join – usually around the age of 16 years. There are no known long term complications associated with Sever’s disease.