Pains caused by lever
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I love to see patients with flat-feet. In fact sometimes I feel that I should dedicate my medical career to educating people about flat-feet. Flat feet causes so much trouble for people and they just don’t realize that in most case it can be easily corrected with a good arch support. As a family doctor I spend a lot of time treating patients with chronic conditions they will have for the rest of their lives. Therefore I love it when patients come in with problems associated with flat-feet. This is one of the few problems I can actually fix and best of all it doesn’t require a medication to fix it.
Flat-feet in medical terms is known as hyperpronation, meaning over pronation. Pronation is the motion of flattening out of the arch as the foot rotates counter-clockwise (externally rotates). Pronation is important because it allows the foot to absorb shock. In addition, Pronation also allows all the bones of the mid-foot to unlock and become like a “bag of bones”. Being a loose “bag of bones” enables the foot to adapt to uneven surfaces (uphill, downhill, rocky surface, etc.). In moderation, pronation is a good thing. Hyperpronation is a bad thing.
The problem with flat feet or hyperpronation is that the foot remains pronated throughout the step. The foot does not supinate (soup-in-ate) as the foot moves into the later stages of the step. Supination is the opposite of pronation. In supination the foot internally rotates (rotates clock-wise). Supination re-locks the bones of the mid-foot and transforms the foot into a rigid lever arm to provide an efficient push-off and propel the body forward. If the foot cannot supinate it remains essentially a loose “bag of bones” and you are unable to use the foot as an efficient, firm lever arm for push off.
If the foot does not supinate it cannot form an efficient lever arm. As a result, the calf muscles have to work all that much harder in order to propel the body forward. This causes fatigue and ache in the muscles of the lower legs at the end of the day. In addition if the calf muscles are working harder they become very strong and bulky. This sometimes leads to a condition known as shin splints. The term “shin splints” usually refers to pain along the inside-front part of the lower leg. Shin splints is usually caused by an imbalance between the calf muscles on the back of the lower leg (posterior muscles) and the anterior muscles or muscles on the front part of the lower leg. The more powerful posterior muscles overwork the less powerful anterior muscles as the anterior muscles try to decelerate the body at heel strike. This causes excess strain, inflammation and pain where the anterior muscles attach to the shin bone.
Hyperpronation can cause the heel pain known as plantar fasciitis. The typical symptom of plantar fasciitis is severe heel pain when taking the first few steps in the morning or during the first few steps after sitting for a few minutes. Hyperpronation causes excessive flattening of the arch. This causes the ligament called the plantar fascia on the bottom of the foot to stretch out too much. The excessive pulling on the plantar fascia causes inflammation where the plantar fascia inserts into the heel.
In conclusion, someone with flat feet has very inefficient foot function and this can lead to heel pain, muscle fatigue and shin splints. By adding an arch support the foot is prevented from hyper-pronating and this improves the over-all efficiency of the foot function. Occasionally you can buy an arch support off-the-shelf that provides support. In most cases, however, the off-the-shelf insoles only provide cushioning and do not correct the hyper-pronation. Life is too short to suffer in pain, especially when the problem can be easily corrected. If someone is having pain as the result of flat-feet it makes sense to spend the extra money to purchase a custom arch support that will correct the problem once and for all.
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For more information please visit http://www.Archatomics.com/ Dr. Jeffrey Davies, a board certified family physician, also has a Master’s degree in biomedical engineering. Prior to entering medical school Dr. Davies spent 12 years conducting research on hip and knee biomechanics at the Massachusetts General Hospital. Dr. Davies’ continued interest in biomechanics has led him to study how problems with the foot may lead to knee, hip and back pain. Dr. Davies explains, “Abnormal foot motion can cause excessive rotation of the lower leg and thus stress concentrations in the hip and knee cartilage. I believe that if the slight imbalances of the foot are correctly diagnosed and then corrected with foot orthotics not only will the foot, knee and hip pain be relieved but the devastating effects of osteoarthritis may be prevented.” Article Source: |
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