Ria Salek
Over-Pronation Of The Feet What Are The Causes
Overview


Pronation is a turning outward of the foot at the ankle, so that one has a tendency to walk on the inner border of the foot. (Pronation is the opposite of supination). When a foot and ankle pronates to a great degree, we call it over-pronation. During the normal gait cycle, we all pronate and then rapidly recover. It is over-pronation that patients are concerned with. This is a static deformity associated with flat feet and sometimes with foot and arch pain.Overpronation


Causes


There has been some speculation as to whether arch height has an effect on pronation. After conducting a study at the Rose-Hulman Institute of Technology, Maggie Boozer suggests that people with higher arches tend to pronate to a greater degree. However, the generally accepted view by professionals is that the most pronation is present in those with lower arch heights. To complicate matters, one study done by Hylton Menz at the University of Western Sydney-Macarthur suggests that the methods for measuring arch height and determining whether someone is ?flat-footed? or ?high-arched? are unreliable. He says, ?For this reason, studies investigating the relationship between static arch height motion of the rearfoot have consistently found that such a classification system is a poor predictor of dynamic rearfoot function.


Symptoms


People with overpronation may suffer from pain in the knees, hips, and low back. Overpronation itself does not necessarily cause any other symptoms but is a contributing factor of many foot conditions such as Plantar Facsiitis, Heel Spur Syndrome, Posterior Tibialis Tendon Rupture or Tendonitis, Hallux Valgus, Bunion Deformities, Metatarsalgia, Hallux Limitus or Hallux Rigidus, Hammer Toes, and Morton?s Neuroma.


Diagnosis


When you overpronate your foot rolls inwards causing the lower leg to rotate inwards too. It's thought that this increases stress on the soft tissues of the lower leg causing pain and inflammation, or more commonly known as shin splints.Pronation


Non Surgical Treatment


If pronation is diagnosed before the age of five it can usually be treated in such a manner that the bones and joints will be aligned properly as growth continues. This may prevent the arch from collapsing, as well as allowing the muscles of the leg to enter the foot without twisting. With proper and early treatment, the foot will not turn out at the ankle, and the child?s gait will improve. Treatment for pronation in children may include: night braces, custom-made orthotics, and exercises. These treatments usually continue until growth is complete, and then the adult may need to wear custom-made orthotics to prevent the pronation from returning (the foot, as every other part of our body, tends to return to its original form if preventive measures are not taken). One side note: frequently, pediatricians will wait too long, hoping that the child will ?outgrow? the problem. By the time they realize that the child?s feet will not improve, it is too late to change the foot. In these cases, custom-made orthotics is used to prevent the pronation from becoming worse.


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.
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