[Complication rate in the treatment of inter- and subtrochanteric femur fractures with two intramedullary osteosyntheses. Comparison of a conventional nailing system and a rotation stable fixation of the head-neck-fragment, gammanail and glidingnail]. - Suckel,A.; Helwig,P.; Schirmer,A.; Garbrecht,M.; Mocke,U. (Zentralbl Chir, 2003)