Severs disease is by far the most common cause of heel pain in young children, the condition commonly occurs in kids around the age of 10-15 years. Severs is a traction apophysitis in which inflammation of the calcaneal apophysis (growth plate) occurs as a result of overuse or micro trauma. As mentioned severs disease is caused by micro trauma and over use, this can include excessive foot pronation (foot rolling in), tight calf muscles, increase in sporting activities and inappropriate footwear. These all put extra sheering forces on the growth plate leading to aggravation and resultant pain. Signs and symptoms of this include pain on squeezing of the heel, absence of swelling and redness, child describing pain as a dull ache, limping and pain with increased activity.
Your child?s heel bone keeps forming new bone until the late teens. The new bone is weak and can be damaged by running or pounding on hard surfaces, like during a basketball game. The new bone may also be irritated by shoes with poor padding in the heels or poor arch supports.
Most children with Sever’s complain of pain in the heel that occurs during or after activity (typically running or jumping) and is usually relieved by rest. The pain may be worse when wearing cleats. Sixty percent of children’s with Sever’s report experiencing pain in both heels.
Sever?s disease can be diagnosed based on your history and symptoms. Clinically, your physiotherapist will perform a “squeeze test” and some other tests to confirm the diagnosis. Some children suffer Sever?s disease even though they do less exercise than other. This indicates that it is not just training volume that is at play. Foot and leg biomechanics are a predisposing factor. The main factors thought to predispose a child to Sever?s disease include decrease ankle dorsiflexion, abnormal hind foot motion eg overpronation or supination, tight calf muscles, excessive weight-bearing activities eg running.
Non Surgical Treatment
In mild cases, elevating the heel through heel lifts in the shoes and decreasing activity level may be enough to control the pain. In more severe cases, orthotic therapy to help control the motion of the heel, as well as icing, elevating, and aspirin therapy may be required to alleviate the symptoms. In those children who do not respond to either therapy mentioned above, it is sometimes necessary to place the child in a below-knee cast for a period of 4-6 weeks. It is important for both the child and parents to understand that the pain and swelling associated with this disorder should resolve once the growth plate has fused to the primary bone in the heel.