Severs disease (calcaneal apophysitis) is a self-limiting condition seen in physically active children. Although there is controversy about the radiographic appearance, some reports propose the importance of fragmentation of the secondary nucleus in the diagnosis of Severs disease. We studied secondary nucleus of the calcaneus with ultrasonography. Twenty-one symptomatic heels of 14 children were examined. All these heels showed fragmentation of the secondary nucleus on both conventional radiograph and sonography. Ultrasonographic examination also showed 2 retrocalcaneal bursitis. Our initial data showed that sonography may be valuable in the diagnosis of Severs disease.
Sever's Disease typically affects boys and girls between 8-15 years of age. Risk factors include. Athletic activity that involves heel contact with hard surfaces, as in gymnastics, track, soccer, basketball, ice skating, ballet and aerobics. The wearing of ill-fitting shoes. Well-made shoes that fit properly are a must for every child. Prolonged periods of standing. If a child complains of heel pain after choir practice, doing dishes, standing in lines or other activities that put pressure on the heel bones, pay attention.
Typically, the sports injury occurs where the achilles tendon attaches to the bone. The epiphyseal growth plate is located at the end of a developing bone where cartilage turns into bone cells. As the growth center expands and unites, this area may become inflamed, causing severe pain when both sides of the heel are compressed. There is typically no swelling and no warmth, so it?s not always an easy condition to spot. The child usually has trouble walking, stiffness upon waking, and pain with activity that subsides during periods of rest.
A physical exam of the heel will show tenderness over the back of the heel but not in the Achilles tendon or plantar fascia. There may be tightness in the calf muscle, which contributes to tension on the heel. The tendons in the heel get stretched more in patients with flat feet. There is greater impact force on the heels of athletes with a high-arched, rigid foot. The doctor may order an x-ray because x-rays can confirm how mature the growth center is and if there are other sources of heel pain, such as a stress fracture or bone cyst. However, x-rays are not necessary to diagnose Sever?s disease, and it is not possible to make the diagnosis based on the x-ray alone.
Non Surgical Treatment
Ice the heel(s) well after exercise (until the area is cold and numb!) Stretch hamstring and calf muscles 2-3 times daily (exercises below) REST when pain becomes persistent or moderate (even if it means skipping games or practices.) Anti-inflammatory medication such as ibuprofen. If symptoms persist, your child may need to see a physical therapist for additional exercises, and/or an orthopedist for othotics or temporary casting/crutches if pain is severe. Sever?s disease is self-recovering, meaning that it will go away on its own when the heels are rested or when the bone is through growing. The condition is not expected to create any long-term disability, and expected to subside in 2-8 weeks. However, pain can recur, for example at the start of a new sports season, several times if it is not taken care of.
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.