Two-Staged Reconstruction for Symptomatic Humeral Medial Epicondyle Nonunion in Children: A Case Report. 
Few cases of humeral medial epicondyle nonunion develop to symptomatic condition.  We report a pediatric case of distally displaced nonunion.  At first, the palliative repair surgery was chosen due to irreduciblity of the epicondyle fragment at 10 years old.  After 2 years and 3 months wait for maturation of ossification at the trochlea, the definitive surgery consisting of epicondylectomy and ligament reconstruction was performed.  This is the first pediatric case of humeral medial epicondyle nonunion with an unossified trochlea which needed a two-staged surgery.  We highlight the surgical plan aimed at anatomical ligament reconstruction focusing an isometric point of MCL.