Sever?s disease (sometimes called Sever disease) is a common cause of heel pain, particularly in the young and physically active. It usually develops just before puberty. Boys are slightly more prone to this condition than girls. Physiotherapy can help manage the symptoms of Sever?s disease so that the young person can continue to take part in physical activity. Another name for Sever?s disease is calcaneal apophysitis.
The calcaneal apophysis develops as an independent center of ossification (possibly multiple). It appears in boys aged 9-10 years and fuses by age 17 years, it appears in girls at slightly younger ages. During the rapid growth surrounding puberty, the apophyseal line appears to be weakened further because of increased fragile calcified cartilage. Microfractures are believed to occur because of shear stress leading to the normal progression of fracture healing. This theory explains the clinical picture and the radiographic appearance of resorption, fragmentation, and increased sclerosis leading to eventual union. The radiographs showing fragmentation of the apophysis are not diagnostic, because multiple centers of ossification may exist in the normal apophysis, as noted. However, the degree of involvement in children displaying the clinical symptoms of Sever disease appears to be more pronounced. In a study of 56 male students from a soccer academy, of whom 28 had Sever disease and 28 were healthy control subjects, findings suggested that higher heel plantar pressures under dynamic and static conditions were associated with Sever disease, though it was not established whether the elevated pressures predisposed to or resulted from the disease. Gastrocnemius ankle equinus also appeared to be a predisposing factor.
Pain in the lower calf and heel area which may be worse when applying pressure either side. Pain worse on activity especially those involving running or jumping. In severe cases this may cause the child to limp when walking. One or both heels affected.
This condition is self limiting, it will go away when the two parts of bony growth join together, this is natural. Unfortunately, Sever's disease can be very painful and limit sport activity of the child while waiting for it to go away, so treatment is often advised to help relieve it. In a few cases of Sever's disease, the treatment is not successful and these children will be restricted in their activity levels until the two growth areas join, usually around the age of 16 years. There are no known long term complications associated with Sever's disease.
Non Surgical Treatment
Please realize that the disorder may last only a couple of weeks to as long as 1-2 years. The treatment plan as prescribed by your doctor MUST be adhered to closely, and the activity level of the child must be controlled during the early stages of treatment. All jumping and running sports, such as basketball, trampoline, volleyball, tennis, soccer, etc., must be eliminated as part of the initial treatment. Once the child has improved and the pain has subsided, a rigid stretching program must then be implemented.
For children with Sever's disease, it is important to habitually perform exercises to stretch the hamstrings, calf muscles, and the tendons on the back of the leg. Stretching should be performed 2-3 times a day. Each stretch should be performed for 20 seconds, and both legs should be stretched, even if the pain is only in one heel. Heel cups or an inner shoe heel lifts are often recommended for patient suffering from Sever's disease. Wearing running shoes with built in heel cups can also decrease the symptoms because they can help soften the impact on the heel when walking, running, or standing.