Management of infected femoral nonunion by arched external fixator augmented by flexible intramedullary nails

Abstract

Purpose: The aim of this study is to evaluate the functional and radiological outcome of the management of infected femoral nonunion by arched frame augmented by flexible intramedullary nails. Patients and Methods: In this retrospective case series study, 20 cases were included. All patients had chronically infected nonunited fracture femur. The mean age of the included patients was 33 years. The site of the femoral fracture was midshaft in 12 patients, proximal third of femur in 6 patients, and distal third in 2 cases. Initially, the fracture was open in 17 patients and closed in 3 patients. Four of the included patients had diabetes mellitus. Ten cases were smokers and six of them were heavy smokers. All cases were managed by arched frames, augmented by flexible intramedullary nails. Functional and radiological evaluation was performed using the Association for the Study and Application of the Methods of Ilizarov (ASAMI) scoring system. Results: The mean follow-up was 18.45 months. All cases achieved union except two cases (10%). According to ASAMI bony score, 11 patients (55%) were excellent, 6 (30%) were good, 1 was fair (5%), and 2 (10%) showed poor results. According to ASAMI functional score, 3 patients were excellent, 15 (75%) were good, 3 (15%) were fair, and 2 (10%) showed poor results. Conclusion: The management of infected nonunion of the femur by arched frame and intramedullary flexible nails provides a stable fixation, with acceptable functional and radiological results. Level of Evidence: Level IV case series study.

Keywords

• arched frame
• femur fracture
• infected nonunion
• intramedullary nails