Monteggia Type IV Equivalent Injury.

Equivalent lesions of Monteggia type IV injury have not appeared so far in the literature. Two Monteggia type IV equivalent lesions, which included a fracture of the radial head associated with midshaft fractures of the radius and ulna in a 3- and in a 12-year-old girl, are reported. The lesion presented in this report could be considered as a missing piece in the puzzle of Monteggia and equivalent injuries, and it could also add towards considering type IV injury as a primary lesion and not as a variant of type I injury.