Overview
Sever’s disease is a disorder of the growth plate of the calcaneus. Symptoms most often occur at the posterior (back of the heel) aspect of the growth plate but sometimes are experienced at the plantar aspect below the heel. The Achilles tendon attaches to the posterior aspect of the growth plate and the plantar fascia takes part of its origin from the plantar aspect. Sever?s disease occurs more often in boys than girls. The age of onset is usually between 8 to 12 years. Sever?s disease is believed to be caused by overuse. On x-ray the growth center first appears in girls between the ages of 4 to 6 years and boys aged 7 to 8 years. The centers fuse to the primary ossification center of the calcaneus in girls at approximately ages 12 to 14 on boys at ages 15 to 17.
Causes
The pain of Severs usually occurs because of inflammation and micro-trauma to the growth plate of the heel bone. This can be caused by a sudden increase in activity, running on very hard surfaces, a growth spurt, tight muscles or feet that roll in.
Symptoms
The most prominent symptom of Sever?s disease is heel pain which is usually aggravated by physical activity such as walking, running or jumping. The pain is localised to the posterior and plantar side of the heel over the calcaneal apophysis. Sometimes, the pain may be so severe that it may cause limping and interfere with physical performance in sports. External appearance of the heel is almost always normal, and signs of local disease such as edema, erythema (redness) are absent. The main diagnostic tool is pain on medial- lateral compression of the calcaneus in the area of growth plate, so called squeeze test. Foot radiographs are usually normal. Therefore the diagnosis of Sever?s disease is primarily clinical.
Diagnosis
Your podiatrist will take a comprehensive medical history and perform a physical examination including a gait analysis. The assessment will include foot posture assessment, joint flexibility (or range of motion), biomechanical assessment of the foot, ankle and leg, foot and leg muscle strength testing, footwear assessment, school shoes and athletic footwear, gait analysis, to look for abnormalities in the way the feet move during gait, Pain provocation tests eg calcaneal squeeze test. X-rays are not usually required to diagnose Sever?s disease.
Non Surgical Treatment
If your child is diagnosed with Sever’s disease, treatment is fairly straightforward. He or she should avoid any activities that cause a flare-up of heel pain. Treat the pain with ice for 20 minutes, three times a day. If the pain is severe, over-the-counter pain relievers such as acetaminophen or ibuprofen can be used for a short period of time. (Don’t use aspirin in a child or teen because it can result in a rare but life-threatening condition called Reye’s syndrome.) In some instances, a child might have other foot problems, as well, such as high arches, flat feet, or bowed legs. In these instances, your doctor can recommend an orthotic device to help further prevent the pain related to Sever’s disease. One other simple tip that can prevent Sever’s disease or speed along recovery is for your child to wear supportive shoes and avoid going barefoot as much as possible.
Surgical Treatment
The surgeon may select one or more of the following options to treat calcaneal apophysitis. Reduce activity. The child needs to reduce or stop any activity that causes pain. Support the heel. Temporary shoe inserts or custom orthotic devices may provide support for the heel. Medications. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, help reduce the pain and inflammation. Physical therapy. Stretching or physical therapy modalities are sometimes used to promote healing of the inflamed issue. Immobilization. In some severe cases of pediatric heel pain, a cast may be used to promote healing while keeping the foot and ankle totally immobile. Often heel pain in children returns after it has been treated because the heel bone is still growing. Recurrence of heel pain may be a sign of calcaneal apophysitis, or it may indicate a different problem. If your child has a repeat bout of heel pain, be sure to make an appointment with your foot and ankle surgeon.
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