Sever condition is an inflammation of the growth plate of the bone at the back of the heel (apophysitis of the calcaneus). The inflammation of Sever condition is at the point where the Achilles tendon attaches to the back of the heel bone.
The actual pathology of the condition is one of more of an overuse syndrome in which the growth plate of the heel may become slightly displaced, causing pain. Biopsies of similar conditions have shown changes consistent with separation of the cartilage. The cause of Sever’s disease is not entirely clear. It is most likely due to overuse or repeated minor trauma that happens in a lot of sporting activities – the cartilage join between the two parts of the bone can not take all the shear stress of the activities. Some children seem to be just more prone to it for an unknown reason, combine this with sport, especially if its on a hard surface and the risk of getting it increases. A pronated foot and tight calf muscles are common contributing factors. The condition is very similar to Osgood-Schlatters Disease which occurs at the knee.
Sever?s disease is a clinical diagnosis based on the youth?s presenting symptoms, rather than on diagnostic tests. While x-rays may be ordered in the process of diagnosing the disease, they are used primarily to rule out bone fractures or other bone abnormalities, rather than to confirm the disease. Common Characteristics of Sever?s Disease include Posterior inferior heel pain. Pain is usually absent when waking in the morning. Increased pain with weight bearing, running, or jumping (or activity-related pain). Area often feels stiff or inflexible. Youth may limp at the end of physical activity. Tenderness at the insertion of the tendons. Limited ankle dorsiflexion range that is secondary to tightness of the Achilles tendon. Activity or sport practices on hard surfaces can also contribute to pain, as well as poor quality shoes, worn out shoes, or the wrong shoes for the sport. Typically, the pain from this disease gradually resolves with rest.
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 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.
The following exercises are commonly prescribed to patients with Severs disease. You should discuss the suitability of these exercises with your physiotherapist prior to beginning them. Generally, they should be performed 1 – 3 times daily and only provided they do not cause or increase symptoms. Your physiotherapist can advise when it is appropriate to begin the initial exercises and eventually progress to the intermediate, advanced and other exercises. As a general rule, addition of exercises or progression to more advanced exercises should take place provided there is no increase in symptoms. Calf Stretch with Towel. Begin this stretch in long sitting with your leg to be stretched in front of you. Your knee and back should be straight and a towel or rigid band placed around your foot as demonstrated. Using your foot, ankle and the towel, bring your toes towards your head as far as you can go without pain and provided you feel no more than a mild to moderate stretch in the back of your calf, Achilles tendon or leg. Hold for 5 seconds and repeat 10 times at a mild to moderate stretch provided the exercise is pain free. Calf Stretch with Towel. Begin this exercise with a resistance band around your foot and your foot and ankle held up towards your head. Slowly move your foot and ankle down against the resistance band as far as possible and comfortable without pain, tightening your calf muscle. Very slowly return back to the starting position. Repeat 10 – 20 times provided the exercise is pain free. Once you can perform 20 repetitions consistently without pain, the exercise can be progressed by gradually increasing the resistance of the band provided there is no increase in symptoms. Bridging. Begin this exercise lying on your back in the position demonstrated. Slowly lift your bottom pushing through your feet, until your knees, hips and shoulders are in a straight line. Tighten your bottom muscles (gluteals) as you do this. Hold for 2 seconds then slowly lower your bottom back down. Repeat 10 times provided the exercise is pain free.