Late Onset Deformity in a Healed Fracture: A Case of Paediatric Post Traumatic Tibia Valga

Post traumatic tibial valga, also known as Cozen’s phenomenon, is a condition of a pathologic knee valgus with variable limb shortening in the affected limb. It is a late-onset complication following a previously healed fracture of the proximal tibial metaphases. The deforming nature of the condition raises much concern for patients and their carers. Despite the appearance of deformity, the child is frequently asymptomatic. It can be treated successfully with watchful waiting and supervised neglect that can potentially span over a few years. In this case report, we emphasise the early recognition of patients at risk of this unique complication. As illustrated in this case report, not all deformity needs surgery.