Sever?s disease, also known as calcaneal apophysitis or Osgood-Schlatter syndrome of the foot. This traction apophysitis is secondary to repetitive microtraumata or overuse of the heel in young athletes. The calcaneus is situated at the most plantar posterior aspect of the foot. The Achilles tendon inserts to the lower, posterior and slightly medial aspect of the calcaneus. The plantar fascia originates from the medial tubercle on the plantar aspect of the calcaneus. Proximal to the epiphysis is the apophysis, where the Achilles tendon actually inserts. The calcaneal growth plate and apophysis are situated in an area subject to high stress from the plantar and Achilles tendon.
Heel pain is very common in children due to the fact they are cnstantly growing. In most children, the heel bone (the calcaneus) is not fully developed until the age of 14 or older. Until then, new bone is forming at the growth plate of the foot (the apophysis, located at the back of the heel), an area which is softer than others due to its role in accommodating the growth. Repetitive stress on the growth plate due to walking, running and sports causes inflammation in the heel area. Because the heel's growth plate is sensitive, repeated running and pounding on hard surfaces can result in pediatric heel pain. Children and adolescents who take part in a lot of sport are especially vulnerable. Over-pronation (fallen arches and rolling inwards of the feet) will increase the impact on the growth plate and is therefore a significant cause and a major contributing factor to heel pain in children.
Children aged between 8 to 13 years of age can experience Sever?s disease with girls being normally younger and boys slightly older. Sever?s disease normally involves the back of the heel bone becoming painful towards the end of intense or prolonged activity and can remain painful after the activity for a few hours. Severe cases can result in limping and pain that can even remain the next morning after sport.
This can include physical examination and x-ray evaluation. X-rays may show some increased density or sclerosis of the apophysis (island of bone on the back of the heel). This problem may be on one side or bilateral.
Non Surgical Treatment
Treatment may consist of one or more of the following, Elevating the heel, Stretching hamstring and calf muscles 2-3 times daily, Using R.I.C.E. (Rest, Ice, Compression, Elevation), Foot orthotics, Medication, Physical therapy, Icing daily (morning), Heating therapy, Open back shoe are best and avoid high heel shoe. The Strickland Protocol has shown a positive response in patients with a mean return to sport in less than 3 weeks.
Having Sever?s disease does not predispose children or teens to any other condition, nor is it a permanent problem. It is self-limiting, and when treated, the pain and other symptoms will abate within a few weeks. Once the growth plate has finished growing, Sever?s disease will resolve and won?t recur. It is important to continue to treat any underlying foot conditions and to avoid any long periods of inactivity.