A case report of plastic deformity of fibula and fracture of tibia

Background: Plastic deformity is a fixed deformity of bones after application of force which is in contrast to elastic deformity, so it remains unchanged. It is a rare condition and is seen more commonly in upper extremity (forearm). Inability to recognize it causes limitation of motion and remaining of angular deformity. It occurs more commonly in children because of flexibility of their bones. For treatment of this deformity, at first we must aware to recognize this condition then it should be corrected before correction of fractured bone and after that it must be controlled to 2-3 weeks by weekly radiographs to ensure that deformity is corrected fully. Case report: An eight years old boy with leg fracture due to motorcycle accident referred to emergency department. At first we tried to reduce it by closed method but we were unsuccessful, so we treat it with open reduction and internal fixation. Conclusion: Always keep in mind one of the reasons of closed reduction failure, especially in extremities with two parallel bones (like leg and forearm) is plastic deformity of one bone which means constant change in the shape of the bone which interferes with reduction of the second .We should be aware of operation necessity.