Sever’s disease occurs in children when the growth plate (which is the growing part of the heel) is injured. The foot is one of the first body parts to grow to full size. This usually occurs in early puberty. During this time, bones often grow faster than muscles and tendons. As a result, muscles and tendons become tight. The heel area is less flexible. During weight-bearing activity (activity performed while standing), the tight heel tendons may put too much pressure at the back of the heel (where the Achilles tendon attaches). This can injure the heel and cause Sever’s disease.
A big tendon called the Achilles tendon joins the calf muscle at the back of the leg to the heel. Sever?s disease is thought to occur because of a mismatch in growth of the calf bones to the calf muscle and Achilles tendon. If the bones grow faster than the muscles, the Achilles tendon that attaches the muscle to the heel gets tight. At the same time, until the cartilage of the calcaneum is ossified (turned into bone), it is a potential weak spot. The tight calf muscle and Achilles tendon cause a traction injury on this weak spot, resulting in inflammation and pain. Sever?s disease most commonly affects boys aged ten to 12 years and girls aged nine to 11 years, when growth spurts are beginning. Sever?s disease heals itself with time, so it is known as self-limiting. There is no evidence to suggest that Sever?s disease causes any long term problems or complications.
The most obvious sign of Sever’s disease is pain or tenderness in one or both heels, usually at the back. The pain also might extend to the sides and bottom of the heel, ending near the arch of the foot. A child also may have these related problems, swelling and redness in the heel, difficulty walking, discomfort or stiffness in the feet upon awaking, discomfort when the heel is squeezed on both sides, an unusual walk, such as walking with a limp or on tiptoes to avoid putting pressure on the heel. Symptoms are usually worse during or after activity and get better with rest.
A Podiatrist can easily evaluate your child?s foot, lower limbs and muscular flexibility, to identify if a problem exists. If a problem is identified, a simple treatment plan is put in place. Initial treatment may involve using temporary padding and strapping to control motion or to cushion the painful area and based on the success of this treatment, a long-term treatment plan will be put in place. This long-term treatment plan may or may not involve Foot Supports, Heel Raises, muscle stretching and or strengthening.
Non Surgical Treatment
The immediate goal of treatment is pain relief. Because symptoms generally worsen with activity, the main treatment for Sever’s disease is rest, which helps to relieve pressure on the heel bone, decreasing swelling and reducing pain. As directed by the doctor, a child should cut down on or avoid all activities that cause pain until all symptoms are gone, especially running barefoot or on hard surfaces because hard impact on the feet can worsen pain and inflammation. The child might be able to do things that do not put pressure on the heel, such as swimming and biking, but check with a doctor first.