Femoral shaft fractures treated with plate fixation and interlocked nailing: a comparative retrospective study.

In a retrospective study, the results of 39 patients with fresh unilateral femoral shaft fractures were studied: 19 had been treated with an AO interlocking nail and 20 with an AO plate. The preoperative characteristics of both groups were similar. The interlocking nail procedure took significantly longer (P = 0.002, Wilcoxon's test) and was associated with technical faults in seven patients. Full weight-bearing was allowed significantly earlier (P = 0.001, Wilcoxon's) in the interlocking nail group. Delayed union was observed in three patients in the plate osteosynthesis group but was not encountered in the interlocking nail group. Cancellous autogenous bone grafting was performed seven times during or after plating, but was not necessary in the interlocking nail group. Two cases of osteitis arose after plating and none after interlocked nailing. At follow-up, one patient in each group was suffering from serious complaints. Conclusion: The interlocking nail procedure took longer than plating, but allowed earlier full weight-bearing. The final results were similar in both groups of patients.