| Rotational Abnormalities
Intoeing Gait
Many parents
are concerned if their child toes-in when walking. Generally, this represents
a normal variant. However, your doctor will be assessing a number of factors
when a child is brought in for an evaluation of this question. Various neurological
conditions and congenital hip conditions can be associated with an abnormal
gait (walking pattern). Once your child has been evaluated and it is determined
that there are no other problems, an intoeing gait may be related to excessive
inward twist of the femur (thigh), tibia (leg) , or foot segments of the lower
limb. As with many physical characteristics, inheritance plays a role.
Thigh Segment
The most common cause of an intoeing gait, in an otherwise normal child, is
excessive inward twist (torsion) of the femur, called femoral anteversion. Children
with this form of intoeing will intoe more when they are tired. There is potential
for the degree of torsion to diminish with time; the proximal femur will remodel
up to age 6-7 years old and sometimes even into teenage years. There are no
long term problems with excessive femoral anteversion. In young children, they
may trip over their feet when walking or running. Special shoes have no effect
on the femoral bone. There are no exercises for bone and no orthoses (braces)
that can untwist the bone. Surgery can theoretically change the rotational alignment
of the femur, though the risks often outweigh the benefits and this surgery
is rarely recommended. Children who toe-in often sit on their feet with their
legs in the shape of a “W”. While sitting on your feet does not
cause abnormal inward twist of the bone, it may impair the normal process of
derotation which occurs with age. Therefore, your child should be discouraged
from sitting on their feet. A table and chair set may be helpful. The use of
a chair while watching TV is also recommended. A booster chair for the dinner
table is another suggestion which may be helpful.
Leg Segment
Intoeing may also be associated with abnormal inward twist (torsion) of the
tibia. This is generally seen in very young children and represents a variant
of normal. Children with internal tibial torsion will appear to be bow-legged
when they walk. As with the femoral segment of the limb, the natural history
of internal tibial torsion is resolution with time. Babies may sleep on their abdomen (stomach) with their feet tucked under them. This sleeping pattern generally
does not persist as they become older. Most toddlers will remodel their tibias
up to the age of 2-3 years. The same recommendations are made for the management
of this segment of the limb as for the thigh and avoid an abnormal sitting posture.
Out-toeing may be seen when the tibia is externally rotated more than average.
This pattern is also a variant of normal. As with the thigh segment of the limb,
there is no “treatment” which can internally rotate the tibia except
surgery. Again abnormal sitting can aggravate this problem.
Foot
Children may rarely intoe from a condition in the foot. Although more common
20 years ago, metatarsus adductus still occurs. The foot is shaped like the
letter “C”. Generally, this is the result of position while in the
uterus. If the foot is flexible, no treatment is necessary as the foot will
straighten itself with normal muscle function. Occasionally, the foot will have
a rigid deformity present. This type of problem may require the use of several
casts to correct the abnormal curvature. There is a condition called “skewfoot”
which has abnormal configuration of the bones in the foot. This may present
with what appears to be a rigid metatarsus adductus deformity. Unfortunately,
the diagnosis of this must await maturation of the foot as x-rays do not demonstrate
this abnormality until the child is 3-4 years of age. We begin to suspect this
condition if the foot does not respond to cast treatment.
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