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May 20 2015

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What Is Severs Disease?

Overview

Another name for Sever?s Disease is calcaneal apophysitis. The heel bone is called the calcaneus. Sever?s Disease is heel pain thought to be caused by inflammation around the growth plate in the calcaneus (apophysis). It is most likely due to repetitive overuse during sports and exercise, which causes increased strain on the heel growth plate. Sever?s Disease won?t cause long-term damage or arthritis. Sever?s Disease is often associated with tight heel tendons. It most commonly affects physically active children who are between the ages of 8, 14 years old, such as soccer players and gymnasts.

Causes

The most common of the Sever?s disease causes is when the heel bone grows more rapidly than the muscles and tendons in the leg. The muscles and tendons become tight and put additional stress on the growth plate in the heel. When this happens, the growth plate begins to swell, becomes tender, and the child will essentially begin to feel one or more Sever?s disease symptoms. It can occur in any child as they grow, but there are some common Sever?s disease causes and risk factors that make a child more prone to the condition. They include participation in sports and other activities that put pressure on the heel, such as basketball, track, and gymnastics. A pronated foot, which makes the Achilles tendon tight, increasing the strain on the growth plate of the heel. An arch that is flat or high, affecting the angle of the heel. Short leg syndrome, when one leg is shorter than the other, causing the shorter leg to pull more on the Achilles tendon in order to reach the ground. Obesity puts extra weight on the growth plate, which can cause it to swell.

Symptoms

Sever?s disease is a clinical diagnosis based on the youth?s presenting symptoms, rather than on diagnostic tests. While x-rays may be ordered in the process of diagnosing the disease, they are used primarily to rule out bone fractures or other bone abnormalities, rather than to confirm the disease. Common Characteristics of Sever?s Disease include Posterior inferior heel pain. Pain is usually absent when waking in the morning. Increased pain with weight bearing, running, or jumping (or activity-related pain). Area often feels stiff or inflexible. Youth may limp at the end of physical activity. Tenderness at the insertion of the tendons. Limited ankle dorsiflexion range that is secondary to tightness of the Achilles tendon. Activity or sport practices on hard surfaces can also contribute to pain, as well as poor quality shoes, worn out shoes, or the wrong shoes for the sport. Typically, the pain from this disease gradually resolves with rest.

Diagnosis

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

The treatment of Sever's disease depends upon the severity of symptoms experienced by the patient. Care is initiated with a simple program of stretching and heel elevation to weaken the force applied to the calcaneus by the Achilles tendon. If stretches and heel elevation are unsuccessful in controlling the symptoms of Sever's disease, children should be removed from sports and placed on restricted activities. Mild Symptoms. Wear a 3/8 heel lift at all times (not just during physical activity). It is important to use a firm lift and not a soft heel pad. Calf stretches 6/day for 60 seconds each. Calf stretches are best accomplished by standing with the toes on the edge of a stretching block. Moderate Symptoms. Follow the directions for minor symptoms and decrease activity including elimination of any athletic activity. In addition to stretching by day, a night stretching splint can be worn while sleeping. Severe Symptoms. Follow the directions for mild and moderate symptoms. Children should be removed from sports activities such as football, basketball, soccer or gym class. A below knee walking cast with a heel lift or in severe cases, non-weight bearing fiberglass cast, may be indicated for 4-6 weeks. The cast should be applied in a mildly plantar flexed position. Cam Walkers should not be used for Sever's Disease unless they have a built in heel lift.

Prevention

Sever's disease may be prevented by maintaining good joint and muscle flexibility in the years leading up to, and during, their growth spurts (eg girls 8 to 10, boys 10 to 12). Foot arch problems such as flat feet should be addressed after the age of five if they don't appear to be self-correcting. If you are concerned, please ask your health practitioner. The most important factor is the amount of weight-bearing exercise your child is currently performing.

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