smith nephew trigen retrograde trigen meta nail retrograde fem retrograde fem nail system surgical meta nail fem ssa 872 03 08 004 7118 1111 trigen meta antegrade fem nailing trigen fan technique intertrochanteric fem fractures infra isthmal fem fracture a distal locking s inserted using retrograde intramedullary nailing with trauma interlocking nail systems autobahn fem nailing system subtrochanteric nonunion biomet surgical retrograde fem nail smith nephew meta tan nail cannulated intramedullary retrograde open fem shaft fractures intramedullary nailing biomechanics retrograde intramedullary nailing with nephew surgical journey instrument set trigen tan and fan trochanteric periprosthetic supracondylar fem retrograde intramedullary nailing with antegrade fem nailing retrograde fem nail insertion biomet surgical retrograde fem nail smith nephew sd trauma trigen intertan solution reduction pdf retrograde intramedullary nailing retrograde fem intramedullary nails hip fracture fixation femur proximal expert r afn retrograde antegrade arthroscopic tibiotalocalcaneal