[Percutaneous screw osteosynthesis of femoral neck fractures in the elderly. Subtrochanteric fractures as severe complications].

Percutaneous osteosynthesis by cannulated screws is a well established method for the treatment of non-displaced femoral neck fractures, especially in elderly patients with comorbidities due to low operative invasiveness. Optimal screw placement is still under discussion. There are only few literature references concerning the complication of subtrochanteric femoral fractures. We performed a review of the literature and a retrospective analysis of our patients treated by this form of osteosythesis from 01.04.2004 to 30.09.2009 searching for screw placement and the incidence of subtrochanteric femoral fractures. This complication was found in 2 of our 35 patients (5.7%) without adequate trauma, such as a stumble or fall having occurred.