Radial head fractures in children are very rare and are more common in patients approaching skeletal maturity, when the mechanical properties of epiphysial bone is similar to that of an adult.
Simple epiphyseal fractures (21r-E/3.1) are fractures with an epiphyseal fragment.
Multifragmentary fractures with complete separation of epi- and metaphysis (21r-E/3.2) are rare.
Simple epiphyseal fractures (21-E/4.1) are fractures with an epiphyseal fragment with a metaphyseal wedge attached to it.
Multifragmentary fractures (fragmentary metaphyseal; 21r-E/4.2) are rare.