Abstract
1. Congenital coxa vara and infantile coxa vara must be separated as distinct entities.
2. Infantile coxa vara is likely to be due to distal movement of the head fragment relative to the shaft and neck. This can result either from severe trauma in normal bone or from shearing stress on an abnormal femoral neck.
3. There is no justification for considering infantile coxa vara as congenital, developmental or due to interruption of ossification. The nature of the pathological lesion at the epiphysial line in some children is unknown.
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