[Borderline indications for locked intramedullary nailing of femur and tibia].

The borderline indications of locked intramedullary nailing of the femur and the tibia, based on Küntscher nailing, are defined by the location of the fracture, the associated soft tissue injury, the appearance of infection and the patient's pulmonary status. From 1975 to 1995 at the Department of Traumatology, Vienna University School of Medicine, 551 patients with 559 femoral fractures and 536 patients with 548 tibial fractures were stabilized using locked intramedullary nailing. A total of 135 (24%) proximal femoral fractures were stabilized using intramedullary locking nails in 54 cases, and using long gamma nails in 81 cases. Ninety-one distal femoral fractures (16%) were stabilized in 82 cases with intramedullary locking nails and in 9 cases using retrograde nailing. In open fractures predominantly a reamed technique was used. Fifty-two of these fractures were femoral fractures and 101 were tibial fractures. Seventy-two femoral fractures (13%) were associated with compromised pulmonary function and polytrauma. Procedural changes from external fixation to the intramedullary locking nail technique were performed in 21 cases of femoral fractures and in 21 cases of tibial fractures. Six tibial fractures diagnosed as having compartment syndrome were treated using unreamed nailing and fasciotomy. The overall infection rate of femoral fractures was 1.7% and 1.9% for all tibial fractures; the nonunion rate of both femoral and tibial fractures was 0.5%. Because of the success rate observed in the treatment of borderline indications for locked intramedullary nailing of femoral and tibial fractures and the improvement in equipment, training and techniques, we have expanded the indications for treatment of these fractures by intramedullary nailing.