What Are The Main Causes Of Severs Disease?

posted on 20 May 2015 12:02 by marlinlojeke
Overview

Sever?s disease (also known as calcaneal apophysitis) is a type of bone injury in which the growth plate in the lower back of the heel, where the Achilles tendon (the heel cord that attaches to the growth plate) attaches, becomes inflamed and causes pain. Sever?s disease is the most common cause of heel pain in children, especially those who exercise or play sports on a regular basis.

Causes

Severs disease is caused by repetitive excessive force to the growing area of the heel bone, causing injury to this area. The calf muscles (soleus and gastrocnemius) are attached by the Achilles tendon to the calcaneus (heel bone). They exert a huge force during running , jumping and landing. In children, there is a growing area in the heel bone called the apophysis and is made of relatively weak cartilage. If there is excessive force at this relatively weak point damage occurs. This excess force can be caused by a number of factors. During the adolescent growth spurt the bones grow very quickly. The muscles do not grow out at the same rate as the bone grows and so can become very tight. The calf muscles generate huge forces when they are used to run, jump and land. This force is transmitted to the calcaneal apophysis (growth area). The gastrocnemius muscle spans both the ankle and knee joint. Tightness of this or any other muscles of the lower limb (hamstring or quadriceps) cause extra force at the growing (weak) area. In active children, who undertake a lot of exercise, the repetitive high force causes damage. If your child has poor biomechanics due to poor lower limb alignment (often caused by flat feet), the muscles of the lower limb have to work excessively hard and this can cause increased force at the tibial tubercle.

Symptoms

Sever's disease usually develops gradually. The pain from Sever's disease is often intermittent and localized to the area where the Achilles tendon attaches to the calcaneus. Swelling may be noted in this area. There can be tenderness on squeezing the calcaneus or pain when trying to stretch the calf muscles. Occasionally there is night pain. As Sever's disease progresses there can be continuous pain.

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 a decrease in ankle dorsiflexion, abnormal hind foot motion eg overpronation or supination, tight calf muscles, excessive weight-bearing activities eg running.

Non Surgical Treatment

Sever?s disease is believed to be the byproduct of repepitive stress and trauma to the growth plate in the calcaneous, or heel bone. The stress is from the pull of the Achilles tendon on the growth plate where the tendon attaches.

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.