Overpronation Of The Foot

Overview


Overpronation still continues to be misused and misunderstood. For example, there was a study that got a lot of recent mileage in the mainstream media and the blogosphere that claimed to show that foot pronation was not associated with injury risk. It was intriguing following comments on the study in mainstream media and in social media, especially the parroting of the press release without any critical appraisal. The study actually eliminated the ?overpronators? that were probably at high risk from the study then found that ?overpronation? was not a risk factor. What is more intriguing was that there was another study from around the same time that found the exact opposite. Clearly, the data on ?overpronation? and risk for injury in runners is mixed, so we need to rely on the more formal systematic reviews and meta-analyses of all the data. The most recent one of those concluded that ?overpronation? is just a small risk factor for running injury risk, but it is still statistically significant.Over-Pronation


Causes


There are many possible causes for overpronation, but researchers have not yet determined one underlying cause. Hintermann states, Compensatory overpronation may occur for anatomical reasons, such as a tibia vara of 10 degrees or more, forefoot varus, leg length discrepancy, ligamentous laxity, or because of muscular weakness or tightness in the gastrocnemius and soleus muscles. Pronation can be influenced by sources outside of the body as well. Shoes have been shown to significantly influence pronation. Hintermann states that the same person can have different amounts of pronation just by using different running shoes. It is easily possible that the maximal ankle joint eversion movement is 31 degrees for one and 12 degrees for another running shoe.


Symptoms


When standing, your heels lean inward. When standing, one or both of your knee caps turn inward. Conditions such as a flat feet or bunions may occur. You develop knee pain when you are active or involved in athletics. The knee pain slowly goes away when you rest. You abnormally wear out the soles and heels of your shoes very quickly.


Diagnosis


One of the easiest ways to determine if you overpronate is to look at the bottom of your shoes. Overpronation causes disproportionate wear on the inner side of the shoe. Another way to tell if you might overpronate is to have someone look at the back of your legs and feet, while you are standing. The Achilles tendon runs from the calf muscle to the heel bone, and is visible at the back of the ankle. Normally it runs in a straight line down to the heel. An indication of overpronation is if the tendon is angled to the outside of the foot, and the bone on the inner ankle appears to be more prominent than the outer anklebone. There might also be a bulge visible on the inside of the foot when standing normally. A third home diagnostic test is called the ?wet test?. Wet your foot and stand on a surface that will show an imprint, such as construction paper, or a sidewalk. You overpronate if the imprint shows a complete impression of your foot (as opposed to there being a space where your arch did not touch the ground).Pronation


Non Surgical Treatment


Side Step with Opposite Reach. This exercise is designed to load the "bungee cord system" of the gluteal muscle and its opposite, latissimus dorsi muscle to keep the foot from overpronating. Because the opposite arm swings across the front leg when walking, this exercise creates tension in the muscles all the way from the front foot, across the back of the hips and back, to the fingers of the opposite hand. Movement Directions. Stand with left foot on top of the dome of the BT. (Note: For added balance, the right foot can tap on the ground, if needed). Reach right leg out to the side of the BT, and tap the ground while squatting down on the left side and reaching right arm across the left knee. Push down with left big toe while squatting. This activates the arch of the left foot and strengthens all the stabilizing muscles on the left side of the lower body. Return to starting position. Perform 8 to 10 repetitions on each leg.


Surgical Treatment


Subtalar Arthroereisis. Primary benefit is that yje surgery is minimally invasive and fully reversible. the primary risk is a high chance of device displacement, generally not tolerated in adults.


An implant is pushed into the foot to block the excessive motion of the ankle bone. Generally only used in pediatric patients and in combination with other procedures, such as tendon lengthening. Reported removal rates vary from 38% - 100%, depending on manufacturer.

What Exactly Is Calcaneal Apophysitis?

Overview


Although the name might sound pretty frightening, Sever's disease is really a common heel injury that occurs in kids. It can be painful, but is only temporary and has no long-term effects. Sever's disease, also called calcaneal apophysitis, is a painful bone disorder that results from inflammation (swelling) of the growth plate in the heel. A growth plate, also called an epiphyseal plate, is an area at the end of a developing bone where cartilage cells change over time into bone cells. As this occurs, the growth plates expand and unite, which is how bones grow. Sever's disease is a common cause of heel pain in growing kids, especially those who are physically active. It usually occurs during the growth spurt of adolescence, the approximately 2-year period in early puberty when kids grow most rapidly. This growth spurt can begin any time between the ages of 8 and 13 for girls and 10 and 15 for boys. Sever's disease rarely occurs in older teens because the back of the heel usually finishes growing by the age of 15, when the growth plate hardens and the growing bones fuse together into mature bone. Sever's disease is similar to Osgood-Schlatter disease, a condition that affects the bones in the knees.


Causes


The cause of Sever's Disease is not entirely clear but it is most likely due to repeated minor trauma that occurs during high-impact activities that involve running and jumping such as soccer, basketball, and gymnastics. It may also occur when an active child regularly wears shoes with poor heel padding, shock absorbency, or poor arch support. Some additional contributing factors are excessive pronation, an overly tight calf muscle, and other flaws in the biomechanics of a child's walking stride. Children who are overweight are also at greater risk of developing Sever's Disease.


Symptoms


The most prominent symptom of Sever's disease is heel pain which is usually aggravated by physical activity such as walking, running or jumping. The pain is localised to the posterior and plantar side of the heel over the calcaneal apophysis. Sometimes, the pain may be so severe that it may cause limping and interfere with physical performance in sports. External appearance of the heel is almost always normal, and signs of local disease such as edema, erythema (redness) are absent. The main diagnostic tool is pain on medial- lateral compression of the calcaneus in the area of growth plate, so called squeeze test. Foot radiographs are usually normal. Therefore the diagnosis of Sever's disease is primarily clinical.


Diagnosis


Sever's disease is diagnosed based on a doctor?s physical examination of the lower leg, ankle, and foot. If the diagnosis is in question, the doctor may order X-rays or an MRI to determine if there are other injuries that may be causing the heel pain.


Non Surgical Treatment


The simplest form of treatment is rest. Symptoms usually peak during activity. If the growth plate of the heel is allowed ample rest time and the amount of pressure is reduced, circumstances will improve. To aid in decreasing pain and swelling, wrap the heel with an ice pack. Your podiatrists at Advanced Foot & Ankle of Arizona will provide you with the perfect guide to recovery. After examination of the affected foot, time taken off from physical activity may be recommended. Stretching exercises and physical therapy will help strengthen the tendons and muscles surrounding the growth plate.
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Viva Bednarek

Author:Viva Bednarek
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