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Intramedullary bone pedestal formation contributing to femoral shaft fracture nonunion:A case report and review of the literature

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World Journal of Orthopedics 2022年第5期13卷 528-537页

作者： Charles B Pasque Alexander J Pappas Chad A Cole Jr Department of Orthopaedic Surgery and Rehabilitation University of Oklahoma College of MedicineOklahoma CityOK 73104United States University of Colorado School of Medicine AuroraCO 80045United States

BACKGROUND Femoral shaft fracture is a commonly encountered orthopedic injury that can be treated operatively with a low overall delayed/nonunion rate.In the case of delayed union after antegrade or retrograde intramedullary nail fixation,fracture dynamization is often attempted first.Nonunion after dynamization has been shown to occur due to infection and other aseptic etiologies.We present a unique case of diaphyseal femoral shaft fracture nonunion after dynamization due to intramedullary cortical bone pedestal formation at the distal tip of the nail.CASE SUMMARY A 37-year-old male experienced a high-energy trauma to his left thigh after coming down hard during a motocross jump.Evaluation was consistent with an isolated,closed,left mid-shaft femur fracture.He was initially managed with reamed antegrade intramedullary nail fixation but had continued thigh pain.Radiographs at four months demonstrated no evidence of fracture union and failure of the distal locking screw,and dynamization by distal locking screw removal was performed.The patient continued to have pain eight months after the initial procedure and 4 mo after dynamization with serial radiographs continuing to demonstrate no evidence of fracture healing.The decision was made to proceed with exchange nailing for aseptic fracture nonunion.During the exchange procedure,an obstruction was encountered at the distal tip of the failed nail and was confirmed on magnified fluoroscopy to be a pedestal of cortical bone in the canal.The obstruction required further distal reaming.A longer and larger diameter exchange nail was placed without difficulty and without a distal locking screw to allow for dynamization at the fracture site.Post-operative radiographs showed proper fracture and hardware alignment.There was subsequently radiographic evidence of callus formation at one year with subsequent fracture consolidation and resolution of thigh pain at eighteen months.CONCLUSION The risk of fracture nonunion caused by intramedullary bone pedestal formation can be mitig

关键词： Nonunion Femoral shaft fracture diaphysis Fracture fixation Antegrade intramedullary nail Case report

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Titanium Elastic Nails for Pediatric Femur Fractures: Clinical and Radiological Study

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Surgical Science 2010年第1期1卷 15-19页

作者： Nishikant Kumar Laljee Chaudhary Department of Orthopaedics Darbhanga medical College and Hospital Laheriasarai Bihar India

Background: Management of femoral diaphyseal fractures in the age group 616 years is controversial. There has been a resurgence worldwide for operative fixation. Material and methods: Twenty children (15 boys, 5 girls) aged 616 years with femoral diaphyseal fractures (20 fractures, one in each) were stabilized with Titanium Elastic Nail (TEN). Patients underwent surgery within ten days of their injury. The results were evaluated using Flynn’s Scoring Criteria.Two nails were used in each fracture. Results: All 20 patients were available for evaluation and follow up for a mean duration of 24 months (1532 months). Radiological union in all cases was achieved in a mean time of 8 weeks. Full weight bearing was possible in a mean time of 10 weeks (812 weeks). The results were excellent in 14 patients (70%) and successful in 6 patients (30%). Few complications that occurred were infection (in 2 cases), knee joint stiffness(in 4 cases), angulation less than 10 degrees( in 4 cases), shortening less than 10 mm(in 4 cases). Conclusion: Intramedullary fixation by TEN is an effective treatment of fracture of femur in properly selected patients of the 616 years age group.

关键词： Children Intramedullary Fixation Titanium Elastic Nail Femoral Fracture diaphysis

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