Pediatric proximal tibial epiphysis fractures are uncommon and have subsequently received little attention in terms of treatment and outcomes. We studied the clinical and functional outcomes of 13 patients with Salter-Harris III and IV fractures of the proximal tibial epiphysis after operative fixation. Associated meniscus, ligamentous, or neurovascular injury was present in 100% of this cohort. Provisional external fixation and locked plating spanning the open physis were used in the majority of cases. The mean clinical follow-up was 15.69 months, where all fractures progressed to union. Good functional outcomes with a low complication rate are possible after operative fixation of these infrequent injuries.