The foot abduction
orthosis is used only after the clubfoot has been completely corrected by serial casting, manipulation, and possibly a heel
cord tenotomy. Even when well corrected, the clubfoot has a tendency to relapse
until the age of approximately three years. The foot abduction orthosis, which
is the only successful method of preventing a relapse, when used consistently as described in this pamphlet is effective in
95% of the patients. Use of the orthosis will not cause development delays of
Foot Abduction Orthosis: The
orthosis consists of an adjustable aluminum bar with adjustable footplates on to which straight last shoes attach. The orientation of the footplates to the bar is set by the orthotist.
The shoes are straight last, meaning they can go on either foot, but the shoes are setup with the buckles on the inside,
so that you do not have to turn the baby over to tighten the strap and laces. The
foot strap is the key to this device; it does not matter if the strap goes through the top or bottom holes on the sides of
the shoe. On the inside of the shoe, above the heel, there is a pink pad that
creates an area for a normal heel to develop and grow into; it also helps to prevent the heel from coming out of the shoe.
Wearing Schedule: Use the
orthosis once the last set of casts is removed. The infant wears the orthosis
for 23 hours a day for the first 3 months following cast removal, out of it only for baths.
For the next 3-4 years, the orthosis is used for night and naptime only. The
duration will vary depending on the severity of clubfoot; your physician will decide this.
However, do not end treatment early; if you are unsure about a recommendation contact Dr. Ponseti with UI Orthopedics
at (319) 356-3469.
Always use cotton socks that cover the foot
everywhere the shoe touches the baby’s foot and leg. Your baby’s
skin may be sensitive after the last casting, so you may want to use two pairs of socks for the first two days only. After
the second day only use one pair of socks.
If your child does not fuss when you put the
orthosis on, you may want to focus on getting the worst foot in first and the better one in second. However, if your baby tends to kick a lot when putting on the orthosis, focus on the better foot first,
because the baby will tend to kick into the second shoe.
Hold the foot into the shoe and tighten the
strap first. The strap helps keep the heel firmly down into the shoe. Do not mark the hole on the strap that you use, because with use the leather strap will stretch and your
mark will be useless.
Check that the child’s heel is down in
the shoe by pulling up and down on the lower leg. If the toes move backwards
and forwards, the heel is not down, so you must retighten the strap. A line should
be on the insole of the shoe, indicating the location of the child’s toes; the toes will be at or beyond this line if
the heel is down.
Lace the shoes tightly. Do not cut off circulation. Remember: the strap is the most
important part. The laces are used to help hold the foot in the shoe.
Be sure all of the baby’s toes are out
straight and that none of them are bent under. Until you are certain of this,
you may want to cut the toes out of a pair of socks so you can clearly see all of the toes.
Set-up of Orthosis: This
orthosis will be set-up for you by your orthotist, but you may be responsible for changing the shoes and widening the bar
as your child grows. Change the shoes only when the baby’s toes completely
curl over the edge of the shoe. The forefoot adduction usually does not recur,
so waiting will not effect the correction, but it will save you money. If you
do not know what size of shoes were used on the bar, measure the length of the shoe and contact American Prosthetics. New shoes will be two sizes larger than the current shoes. You may contact your local orthotist or American Prosthetics to order new Markell straight last shoes for
the foot abduction orthosis. Screws are used on the bottom of the shoes to attach
the shoes to the footplate on the bar. Mark the joints on the bar before changing
the shoes to ensure a return to the proper alignment. Attach the shoes with the
buckles toward the inside. You should adjust the width of the bar at this time. Measure the distance between the outside of the shoulders, this will be equal to the
distance between the center heel screws in the shoe; lengthen the bar to match your measurements. Mark a line for the location of the toes the first time the shoes are worn, to indicate that the heel is
Expect your child to fuss in the orthosis for
the first 2 days. This is not because the orthosis is painful, but because it
is something new and different.
Play with your child in the orthosis. This is a key to getting over the irritability quickly. The child is unable to move his/her legs independent of each other.
You must teach your child that he/she can kick and swing the legs simultaneously with the orthosis on. You can do this by gently flexing and extending the knees by pushing and pulling on the bar of the orthosis.
Make it a routine. Children do better if you make this treatment a routine in your life.
During the 3-5 years of night/naptime wear, put the orthosis on any time your child goes to the “sleeping spot.” They will figure out that when it is that time of day they need to wear the brace. Your child is less likely to fuss if you make the use of this orthosis a part of the
Pad the bar.
A bicycle handle bar pad works well for this. By padding the bar you will
protect your child, yourself, and your furniture from being hit by the bar when the child is wearing it.
Never use lotion on any red spots on the skin. Lotion will make the problem worse. Some
redness is normal with use. Bright red spots or blisters, especially on the back
of the heel, usually indicate that the shoe was not worn tightly enough. Make
sure that the heel stays down in the shoe. If you notice any bright red spots
or blistering contact your physician.
If your child continues to escape from the
orthosis try the following: (check after each step to see if the heel is down, if not proceed to the next step)
Tighten the strap by one more hole
Tighten the laces
Remove the tongue of the shoe (Use of the orthosis,
without the tongue, will not harm your child)
Try lacing the shoes from top to bottom, so
that the bow is by the toes.
Periodically tighten the screws on the bar. Tools have been provided.