Clinically both present with deformity and abnormal mobility at fracture site.
Dear Ajai
The pseudarthrosis of the tibia and fibula (after trauma) in a child is rare. The child should be considered the congenital pseudarthrosis and one of the characteristics is that the deviation of the deformity is lateral and anterior
Dear Dr. Singh, usually the congenital pseudarthrosis of tibia affects primarily only the tibia. Fibula is deformed secondarily (by sympathy with the abnormal deformity and shortening of the tibia). In fact there is no pseudarthrosis of the fibula. Nelson is right that the antero-lateral deformity is typical for such cases. I would add that also ankle and foot deformities accompany this vicious congenital condition. In about 60% of the cases neurofibromatosis type I is present. So these are the main differences.
On the other hand, if non-union of both leg bones is present, one should have to clarify if a history of injury or abuse (battered child) is present. In any case, non-union of both leg bones in a child (especially in a little child) is really rare.
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