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Journal Article
Research Support, Non-U.S. Gov't
The treatment of nonunions following intramedullary nailing of femoral shaft fractures.
Journal of Orthopaedic Trauma 2002 July
OBJECTIVE: To assess the effectiveness of different surgical options in the treatment of nonunion of a femoral shaft fracture after initial intramedullary nailing.
DESIGN: Retrospective.
SETTING: University hospital.
PATIENTS AND METHODS: During a seven-year period a total of 278 skeletally mature patients with 280 fresh femoral shaft fractures were treated by intramedullary nailing. Of these patients, a subgroup of consecutive patients with nonunion of the fracture were subjected to a detailed analysis and were followed until the fracture was united (mean thirty-three months). Injury mechanism, fracture pattern using various established classifications, any possible concomitant injuries, complications, and subsequent surgical interventions were recorded.
RESULTS: Of the total of 280 fractures, nonunion was observed in thirty-four patients with thirty-five fractures (12.5 percent). To achieve solid union, one reoperation was sufficient in twenty-five fractures, six fractures had to be operated on twice, and four needed three operations. There were five patients with autogenous bone grafting alone, and all five required a further reoperation for the nonunion. After a dynamization procedure, four of seventeen patients required a further reoperation. After eight exchange nailing procedures, further surgery for nonunion was necessary in only one case. Solid union was achieved within six months after the final successful reoperation. A marked shortening of the femur developed as a local complication in six cases, four of which had undergone dynamization as final treatment before solid union.
CONCLUSIONS: Exchange nailing without extracortical bone grafting seems to be the most effective method to treat a disturbed union of a femoral shaft fracture after intramedullary nailing. Autogenous extracortical bone grafting alone proved to be insufficient. Dynamization predisposed to shortening of the bone.
DESIGN: Retrospective.
SETTING: University hospital.
PATIENTS AND METHODS: During a seven-year period a total of 278 skeletally mature patients with 280 fresh femoral shaft fractures were treated by intramedullary nailing. Of these patients, a subgroup of consecutive patients with nonunion of the fracture were subjected to a detailed analysis and were followed until the fracture was united (mean thirty-three months). Injury mechanism, fracture pattern using various established classifications, any possible concomitant injuries, complications, and subsequent surgical interventions were recorded.
RESULTS: Of the total of 280 fractures, nonunion was observed in thirty-four patients with thirty-five fractures (12.5 percent). To achieve solid union, one reoperation was sufficient in twenty-five fractures, six fractures had to be operated on twice, and four needed three operations. There were five patients with autogenous bone grafting alone, and all five required a further reoperation for the nonunion. After a dynamization procedure, four of seventeen patients required a further reoperation. After eight exchange nailing procedures, further surgery for nonunion was necessary in only one case. Solid union was achieved within six months after the final successful reoperation. A marked shortening of the femur developed as a local complication in six cases, four of which had undergone dynamization as final treatment before solid union.
CONCLUSIONS: Exchange nailing without extracortical bone grafting seems to be the most effective method to treat a disturbed union of a femoral shaft fracture after intramedullary nailing. Autogenous extracortical bone grafting alone proved to be insufficient. Dynamization predisposed to shortening of the bone.
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