Sever?s disease or Sever?s lesion refers to an injury to the bone growth plate at the back of the heel bone (calcaneous) in young people, particularly those who are physically active. It usually develops in puberty and is slightly more common in boys than girls.
Sever's disease can result from standing too long, which puts constant pressure on the heel. Poor-fitting shoes can contribute to the condition by not providing enough support or padding for the feet or by rubbing against the back of the heel. Although Sever's disease can occur in any child, these conditions increase the chances of it happening. Pronated foot (a foot that rolls in at the ankle when walking), which causes tightness and twisting of the Achilles tendon, thus increasing its pull on the heel's growth plate. Flat or high arch, which affects the angle of the heel within the foot, causing tightness and shortening of the Achilles tendon. Short leg syndrome (one leg is shorter than the other), which causes the foot on the short leg to bend downward to reach the ground, pulling on the Achilles tendon. Overweight or obesity, which puts weight-related pressure on the growth plate.
Sever?s disease is more common in boys. They tend to have later growth spurts and typically get the condition between the ages of 10 and 15. In girls, it usually happens between 8 and 13. Symptoms can include pain, swelling, or redness in one or both heels, tenderness and tightness in the back of the heel that feels worse when the area is squeezed. Heel pain that gets worse after running or jumping, and feels better after rest. The pain may be especially bad at the beginning of a sports season or when wearing hard, stiff shoes like soccer cleats. Trouble walking. Walking or running with a limp or on tip toes.
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
See a Podiatrist. Minimise inflammation, by the use of ice, rest and reduction of activity. Minimise pain with the use of anti-inflammatory medications. Shoes have been shown to attenuate shock and reduce impact on the heel. Effective cushioning in the rear through specifcally placed cushioning units, such as GEL under the heel. A 10mm heel gradient that creates a more efficient foot posture and therefore reducing strain on the lower limb. Sever's is self limiting and only possible when the growth plate is still present, and does not exist once the growth plates have closed. Podiatrists have an important role to play in preventing and managing foot problems. Prompt action is important. Problems which are left without assessment or treatment may result in major health risks.
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.