Overview
Often misunderstood, pronation is considered by many to be a negative attribute; pronation is actually a good thing in the correct amount. Pronation is the body's response to the ground forces incurred during running and walking. When the foot impacts the ground, the arch elongates and flattens, which allows the foot to roll inward. This action helps the body to absorb shock. The degree to which the arch flattens is often associated with the degree the foot pronates. An ideal foot-strike is said to be neutral and is characterized by slight inward movement of the ankle-bone during stance (when the foot is in contact with the ground). Most runners for example exhibit over-pronation in varying degrees. 50-60% of runners exhibit mild to moderate over-pronation and are best suited for support orthotics. 20-30% of runners exhibit severe over-pronation and are best suited for motion control shoes.
Causes
In adults, the most common reason for the onset of Over-Pronation is a condition known as Post Tibial Tendonitis. This condition develops from repetitive stress on the main supporting tendon (Posterior Tibial Tendon) of the foot arch. As the body ages, ligaments and muscles can weaken. When this occurs the job of providing the majority of the support required by the foot arch is placed upon this tendon. Unfortunately, this tendon cannot bear the weight of this burden for too long. Eventually it fatigues under the added strain and in doing so the foot arch becomes progressively lower over a period of time.
Symptoms
Overpronation may have secondary effects on the lower legs, such as increased rotation of the tibia, which may result in lower leg or knee problems. Overpronation is usually associated with many overuse injuries in running including medial tibial stress syndrome, or shin splints, and knee pain Individuals with injuries typically have pronation movement that is about two to four degrees greater than that of those with no injuries. Between 40% and 50% of runners who overpronate do not have overuse injuries. This suggests that although pronation may have an effect on certain injuries, it is not the only factor influencing their development.
Diagnosis
The best way to discover whether you have a normal gait, or if you overpronate, is to visit a specialty run shop, an exercise physiologist, a podiatrist or a physical therapist who specializes in working with athletes. A professional can analyze your gait, by watching you either walk or run, preferably on a treadmill. Some facilities can videotape your gait, then analyze the movement of your feet in slow-motion. Another (and less costly) way is to look at the bottom of an older pair of run shoes. Check the wear pattern. A person with a normal gait will generally see wear evenly across the heel and front of the shoe. A person who overpronates will likely see more wear on the OUTside of the heel and more wear on the INside of the forefoot (at the ball). A person who supinates will see wear all along the outer edges of the shoe. You can also learn about your gait by looking at your arches. Look at the shape your wet feet leave on a piece of paper or a flat walking surface.
Non Surgical Treatment
If you overpronate, you should talk with a foot and ankle specialist, especially if symptoms have not developed yet. Questions you may want to ask your doctor include what are the best running shoes on the market? Where can I find those shoes? If over-the-counter orthotics don?t work, how long should I wait before contacting you for custom-made orthotics? On my next visit, what type of diagnostic testing should I expect? If I limit the amount of time I spend running, will my overpronation symptoms disappear? What additional treatment options can we try?
Prevention
Custom-made orthotics will reduce the twisting of the leg muscles as they enter the foot, by maintaining a normal alignment of the bones and joints of the foot. If the bones and joints are aligned properly, by reducing the pronation, the muscles can run straight to their attachments in the foot, without twisting to get to these bones. This action of custom-made orthotics will reduce Achilles Tendonitis shin splints; ankle, knee, hip, and lower back pain; and leg cramps. This action will also allow the leg muscles to work more efficiently, thus allowing you to walk and run with less effort.
Often misunderstood, pronation is considered by many to be a negative attribute; pronation is actually a good thing in the correct amount. Pronation is the body's response to the ground forces incurred during running and walking. When the foot impacts the ground, the arch elongates and flattens, which allows the foot to roll inward. This action helps the body to absorb shock. The degree to which the arch flattens is often associated with the degree the foot pronates. An ideal foot-strike is said to be neutral and is characterized by slight inward movement of the ankle-bone during stance (when the foot is in contact with the ground). Most runners for example exhibit over-pronation in varying degrees. 50-60% of runners exhibit mild to moderate over-pronation and are best suited for support orthotics. 20-30% of runners exhibit severe over-pronation and are best suited for motion control shoes.
Causes
In adults, the most common reason for the onset of Over-Pronation is a condition known as Post Tibial Tendonitis. This condition develops from repetitive stress on the main supporting tendon (Posterior Tibial Tendon) of the foot arch. As the body ages, ligaments and muscles can weaken. When this occurs the job of providing the majority of the support required by the foot arch is placed upon this tendon. Unfortunately, this tendon cannot bear the weight of this burden for too long. Eventually it fatigues under the added strain and in doing so the foot arch becomes progressively lower over a period of time.
Symptoms
Overpronation may have secondary effects on the lower legs, such as increased rotation of the tibia, which may result in lower leg or knee problems. Overpronation is usually associated with many overuse injuries in running including medial tibial stress syndrome, or shin splints, and knee pain Individuals with injuries typically have pronation movement that is about two to four degrees greater than that of those with no injuries. Between 40% and 50% of runners who overpronate do not have overuse injuries. This suggests that although pronation may have an effect on certain injuries, it is not the only factor influencing their development.
Diagnosis
The best way to discover whether you have a normal gait, or if you overpronate, is to visit a specialty run shop, an exercise physiologist, a podiatrist or a physical therapist who specializes in working with athletes. A professional can analyze your gait, by watching you either walk or run, preferably on a treadmill. Some facilities can videotape your gait, then analyze the movement of your feet in slow-motion. Another (and less costly) way is to look at the bottom of an older pair of run shoes. Check the wear pattern. A person with a normal gait will generally see wear evenly across the heel and front of the shoe. A person who overpronates will likely see more wear on the OUTside of the heel and more wear on the INside of the forefoot (at the ball). A person who supinates will see wear all along the outer edges of the shoe. You can also learn about your gait by looking at your arches. Look at the shape your wet feet leave on a piece of paper or a flat walking surface.
Non Surgical Treatment
If you overpronate, you should talk with a foot and ankle specialist, especially if symptoms have not developed yet. Questions you may want to ask your doctor include what are the best running shoes on the market? Where can I find those shoes? If over-the-counter orthotics don?t work, how long should I wait before contacting you for custom-made orthotics? On my next visit, what type of diagnostic testing should I expect? If I limit the amount of time I spend running, will my overpronation symptoms disappear? What additional treatment options can we try?
Prevention
Custom-made orthotics will reduce the twisting of the leg muscles as they enter the foot, by maintaining a normal alignment of the bones and joints of the foot. If the bones and joints are aligned properly, by reducing the pronation, the muscles can run straight to their attachments in the foot, without twisting to get to these bones. This action of custom-made orthotics will reduce Achilles Tendonitis shin splints; ankle, knee, hip, and lower back pain; and leg cramps. This action will also allow the leg muscles to work more efficiently, thus allowing you to walk and run with less effort.