Childrens Medical Office  of North Andover, P.C.



 
TWISTED FEET & LEGS
Overview

A common complaint in childhood is bent or misshapen legs and feet. Usually the reason for this is simple: The womb is a tight place. Bone is a living tissue which remodels itself constantly in response to the strains and forces that are put on it. When cramped in the womb, it bends. When called on regularly to carry the body in walking, it slowly straightens out (since this is the most effective shape for that function). During the first months of life little or no force is exerted on the legs. The bones maintain whatever position they took up in the womb because they have no reason to change. Once walking begins any deformity starts to improve naturally. Even without any "deformity", the normal appearance of a child's legs changes dramatically over the first ten years of life! Ultimately, this process will totally erase the vast majority of twists and turns.

We did not always understand all this! Not very long ago, good doctors prescribed all sorts of treatments for bent legs and feet ranging from special shoes to braces to long-term casting. Scientific research has now shown however that these treatments rarely make any difference at all - good or bad! We have therefore become much less "aggressive" about prescribing such treatments in the past 10-15 years. Yes, some doctors still use these traditional but outdated and unnecessary methods - particularly older general orthopedists - but your pediatrician can easily identify those few cases that may really benefit from treatment. In such a case, this office will refer you to a pediatric orthopedic subspecialist who is up to date in the field and who only prescribes treatments which are indeed helpful and necessary.

It is understandable to be nervous about your child's feet, and wanting a second opinion is never unreasonable. If we feel your child doesn't need treatment but you remain unsure, protect your child and yourself from unnecessary pain and expense by going to a pediatric orthopedist in an academic institution such as Children's Hospital or Floating in Boston. (In general, an orthopedist who see's both adults and children is NOT a pediatric orthopedist and will not give you the most informed judgment in these matters. Please feel free to ask us to refer you despite our opinion that treatment is unnecessary - we will be happy to give you the name of a good pediatric orthopedist anyway!

There are 5 areas in which parents often have concerns about feet and legs: flat feet, in or out-toeing, bowlegs, knock-knees and the best choice in shoes.  If you have any other concerns about you child's feet or legs, please feel free to ask.


Flat Feet

All infants initially have an appearance of "flat feet" due to fat pads on the bottom of the foot obscuring the arch. A visible arch usually only develops after 2 years, and many children will not have a readily apparent arch even for some considerable time thereafter. In fact, up to 7% of children will never have a visible arch, and this is usually normal! There is no need for concern unless the foot is stiff, painful, or the heel cords ("Achilles tendons") are tight (which will usually exhibit as "toe walking"). As long as none of those problems are present, the "flat feet" will not cause any disability or limitation. Using wedges and special shoes will have no benefit - indeed such measures may sometimes even make the problem worse!


In-toeing & Out-toeing (Feet that turn in or out)

The appearance of a young infant's feet is due to position in the womb only. It can be in-toed or out-toed and can even be different on the two sides! With growth and walking the feet gradually assume a more forward position. Referral and treatment is only needed if the foot is rigid or stiff and can not be brought easily to a neutral position through passive manipulation. Aside from true clubfoot (rare) and other rigid deformities, flexible in or out-toeing caused by foot position before birth needs no treatment.

Out-toeing which APPEARS or DEVELOPS for the first time after infancy is quite unusual and should prompt a thorough investigation for unsuspected injuries, neurologic problems, or bone tumors. Intoeing which emerges beyond infancy is common and almost always benign, however. The cause of being intoed (pigeon-toed) later in childhood can usually be found in either the leg or the hip. Most common is tibial torsion in which the lower part of the leg twists causing the foot to turn in. While tibial torsion is normal in the newborn and usually resolves once the child begins to crawl, walk and stand, it sometimes persists into the preschool years or beyond. It may interfere with running and sports. Traditional treatments for this included braces, special shoes and changing the sleep position: none of these methods have proven to be any more helpful than simple waiting in scientific studies. Treatment or not, the vast majority of cases improve at the same rate and only rarely will torsion persist beyond 6-7 years. Successful correction of those few cases which will not spontaneously resolve unfortunately requires surgery, and a decision about whether this is worthwhile rightly rests upon the degree of impairment in the child's day-to-day functioning. Luckily, rarely is the child severely enough effected by the intoeing to justify such aggressive intervention.

Another cause of intoeing is femoral anteversion - the thigh bones being rotated forward in the hip joint. This essentially postural abnormality is often evident (and is considered normal) in children 1-3 years old, but will occasionally persist into early adolescence. Femoral anteversion is what allows kids to sit in the "tailor" or "W" position, and some argue that this should be discouraged because it promotes persistence of the anteversion. The increased angle where the thigh bone and the hip bone come together will eventually remodel itself without treatment regardless of sitting habits, however, and the child will then no longer toe in.

Overall most cases and causes of intoeing are best treated by time. These processes resolve on their own. Good pediatric orthopedists will usually wait until 9-12 years of age before being concerned about intoeing. Even then few children will need active treatment.


Bowlegs & Knock Knees

All children start bowlegged and then progress to being knock-kneed!!! These are normal developmental processes. Bowlegs usually resolve by 4 years of age and may be more prominent if a child is overweight. Knock-knees start to be seen around 3 years of age and often appear in the same children who used to be bowlegged. Normal adult alignment finally occurs around 9-12 years of age. The only time to be concerned with either of these things is if there is a marked difference between the two sides, pain, associated poor growth, or an unusually severe degree of curvature which your pediatrician will note.


Shoes

When buying shoes there are certain guidelines to keep in mind. Shoes should be flexible, breathable, porous, have good tread and traction with flat soles. They should be shaped like the foot - no pointy toes. Growing room should be allowed by having 1-1½cm between the end of the toe and end of the shoe. High tops are only useful to prevent the child from removing the shoes. They are not necessary as ankle supports. Shoes provide protection when outside - inside bare feet are just as good for the development of feet and walking. The best reason to have children wear shoes in the house is simply so they are accustomed to it and won't fight putting them on at other times. Since children grow rapidly don't feel you must buy expensive shoes. White, high top leather walkers are not good shoes anyway. They are too stiff, non-porous, lack traction, and hamper walking. The best bet is really a plain old sneaker, the cheaper the better, but not too small.




Copyright © 1996-2010 Childrens Medical Office of North Andover, P.C.