Sever's disease (calcaneal apophysitis) is a common cause of heel pain, particularly in physically active young people who are about to begin puberty. The cause is uncertain, but it is thought that the long calf bones of the leg grow faster than the surrounding muscle and soft tissue, causing the Achilles tendon to pull uncomfortably tight. Sever?s disease (sometimes called Sever disease) is a common cause of heel pain, particularly in the young and physically active. It usually develops just before puberty. Boys are slightly more prone to this condition than girls. Physiotherapy can help manage the symptoms of Sever?s disease so that the young person can continue to take part in physical activity. Another name for Sever?s disease is calcaneal apophysitis.
There are several theories surrounding the cause of Sever?s disease. These range from a tight Achilles tendon, to micro stress fractures of the heel, to biomechanical mal-alignment, to trauma, to flat feet, and even to obesity. But the prevailing theory suggests the onset of Sever?s disease occurs when the child's growth plate is at its weakest, while a tightened Achilles tendon pulls repeatedly on the growth plate, such as during AGS.
The main symptom of sever's disease is pain and tenderness at the back of the heel which is made worse with physical activity. Tenderness will be felt especially if you press in or give the back of the heel a squeeze from the sides. There may be a lump over the painful area. Another sign is tight calf muscles resulting with reduced range of motion at the ankle. Pain may go away after a period of rest from sporting activities only to return when the young person goes back to training.
The x-ray appearance usually shows the apophysis to be divided into multiple parts. Sometimes a series of small fragments is noted. Asymptomatic heels may also show x-ray findings of resporption, fragmentation and increased density. But they occur much less often in the normal foot. Pulling or ?traction? of the Achilles tendon on the unossified growth plate is a likely contributing factor to Sever?s disease. Excessive pronation and a tight Achilles and limited dorsiflexion may also contribute to the development of this condition.
Non Surgical Treatment
If your child have Sever's disease, the following is suggested, cut back on sporting activities, don't stop, just reduce the amount until symptoms improve (if the condition has been present for a while, a total break from sport may be needed later) avoid going barefoot, a soft cushioning heel raise is really important (this reduces the pull from the calf muscles on the growth plate and increases the shock absorption, so the growth plate is not knocked around as much). Stretch the calf muscles, provided the stretch does not cause pain in the area of the growth plate). The use of an ice pack after activity for 20mins is often useful for calcaneal apophysitis - this should be repeated 2 to 3 times a day.
For children with Sever's disease, it is important to habitually perform exercises to stretch the hamstrings, calf muscles, and the tendons on the back of the leg. Stretching should be performed 2-3 times a day. Each stretch should be performed for 20 seconds, and both legs should be stretched, even if the pain is only in one heel. Heel cups or an inner shoe heel lifts are often recommended for patient suffering from Sever's disease. Wearing running shoes with built in heel cups can also decrease the symptoms because they can help soften the impact on the heel when walking, running, or standing.