This study found a similar rate of neck-shaft combinations (3.2%), a higher rate of open fractures, and increased incidence of associated injuries compared with the literature. Most importantly, our data indicate that even with a negative preoperative computed tomography scan, a femoral neck fracture can be present. A trend also indicated more missed femoral neck fractures with retrograde nailing, which may be attributed to less fluoroscopic imaging of the hip with this technique. Patients with femoral shaft fractures should have good quality radiographs after femoral nailing to minimize the risk of missed femoral neck fractures.
Off-label use of BMP-2 in acute fractures and nonunions resulted in a 66% success rate. It remains uncertain whether there is any clinical advantage to this approach, but it appears that female gender, open injury, and higher volumes of bone defect may be important negative prognostic factors for obtaining radiographic union. Appropriately powered prospective randomized trials are needed for further clarification, especially in light of the high cost of this treatment.
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