Sever?s disease, also referred to as calcaneal apophysitis, is an injury in the growth plate of the lower part of the heel bone where the Achilles tendon attaches to the bone. Sever?s disease is a common condition affecting children between the ages of 8 and 15 that participate in sports or are particularly active. This condition is believed to be caused by repeated trauma to the heel, weakening its internal structure. Typically occurring in adolescence, Sever?s disease causes painful inflammation of the growth plate. This condition can affect any child, however there is a higher probability of its occurrence if the child experiences pronation, has flat or high arches, short leg syndrome and/or is overweight.
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.
Activity-related pain that occurs on the back of the heel, where the Achilles tendon attaches on to the heel bone. Tenderness, pain & swelling on the heel bone. Difficulty walking or walking with a limp or on tiptoes.
Sever?s disease can be diagnosed based on the symptoms your child has. Your child?s doctor will conduct a physical examination by squeezing different parts of your child?s foot to see if they cause any pain. An X-ray may be used to rule out other problems, such as a broken bone or fracture.
Non Surgical Treatment
Resting the foot and applying ice to the affected area are some of the most effective methods when it comes to treating Sever?s Disease. Make sure the ice is always wrapped in a cloth of some sort. Applying ice directly to the skin can cause frostbite. A monitored stretching program of the lower limbs (particularly of the calf muscles) as well as a small heel lift may also be suggested.
The following exercises are commonly prescribed to patients with Severs disease. You should discuss the suitability of these exercises with your physiotherapist prior to beginning them. Generally, they should be performed 1 - 3 times daily and only provided they do not cause or increase symptoms. Your physiotherapist can advise when it is appropriate to begin the initial exercises and eventually progress to the intermediate, advanced and other exercises. As a general rule, addition of exercises or progression to more advanced exercises should take place provided there is no increase in symptoms. Calf Stretch with Towel. Begin this stretch in long sitting with your leg to be stretched in front of you. Your knee and back should be straight and a towel or rigid band placed around your foot as demonstrated. Using your foot, ankle and the towel, bring your toes towards your head as far as you can go without pain and provided you feel no more than a mild to moderate stretch in the back of your calf, Achilles tendon or leg. Hold for 5 seconds and repeat 10 times at a mild to moderate stretch provided the exercise is pain free. Calf Stretch with Towel. Begin this exercise with a resistance band around your foot and your foot and ankle held up towards your head. Slowly move your foot and ankle down against the resistance band as far as possible and comfortable without pain, tightening your calf muscle. Very slowly return back to the starting position. Repeat 10 - 20 times provided the exercise is pain free. Once you can perform 20 repetitions consistently without pain, the exercise can be progressed by gradually increasing the resistance of the band provided there is no increase in symptoms. Bridging. Begin this exercise lying on your back in the position demonstrated. Slowly lift your bottom pushing through your feet, until your knees, hips and shoulders are in a straight line. Tighten your bottom muscles (gluteals) as you do this. Hold for 2 seconds then slowly lower your bottom back down. Repeat 10 times provided the exercise is pain free.