Sever’s Disease (Calcaneal Aphophysitis) is not a disease, but a repetitious strain injury common in children between the ages of 8 and 14 years old. It is a common cause of heel pain, particularly in the very active child. Patients with Sever’s disease complain of pain in the bottom surface region of the back of the heel. This is where the growth plate is located, and is not fully developed or calcified in a child’s foot.
Contraction of the calf muscles along with the rapid growth of the leg bone (tibia), decreases ankle motion and increases strain on the heel area. This puts strain on the Achilles tendon. Injury results from repetitive pulling through the heel bone by the Achilles and the traction forces from the plantar fascia.
The pain is at the heel or around the Achilles tendon. This is felt commonly during exercise, particularly activities involving running or jumping. The back of the heel may also be tender to touch and there may be localised swelling. There may be stiffness in the calf muscles first thing in the morning and you may notice limping or a tendency to tiptoe.
Physical examination varies depending on the severity and length of involvement. Bilateral involvement is present in approximately 60% of cases. Most patients experience pain with deep palpation at the Achilles insertion and pain when performing active toe raises. Forced dorsiflexion of the ankle also proves uncomfortable and is relieved with passive equinus positioning. Swelling may be present but usually is mild. In long-standing cases, the child may have calcaneal enlargement.
Non Surgical Treatment
Treatment depends on the severity of the condition, but may include relative rest and modified activity, a physiotherapist can help work out what, and how much, activity to undertake. Cold packs, apply ice or cold packs to the back of the heels for around 15 minutes after any physical activity, including walking. Shoe inserts, small heel inserts worn inside the shoes can take some of the traction pressure off the Achilles tendons. This will only be required in the short term. Medication, pain-relieving medication may help in extreme cases, but should always be combined with other treatment and following consultation with your doctor). Anti-inflammatory creams are also an effective management tool. Splinting or casting, in severe cases, it may be necessary to immobilise the lower leg using a splint or cast, but this is rare. Time, generally the pain will ease in one to two weeks, although there may be flare-ups from time to time. Correction of any biomechanical issues, a physiotherapist can identify and discuss any biomechanical issues that may cause or worsen the condition. Education on how to self-manage the symptoms and flare-ups of Sever?s disease is an essential part of the treatment.
Maintain good flexibility through stretching exercises. Avoid excessive running on hard surfaces. Use quality, well-fitting shoes with firm support and a shock-absorbent sole.