[Comparative implant analysis in the operative treatment of unstable per- and subtrochanteric femoral fractures and results of 300 osteosyntheses with the 130 degree double T plate].

We have found that the 130 degrees-Double-T-Plate, when used to repair unstable intertrochanteric femoral fractures in patients in the eighth decade, where high morbidity (92%), osteoporosis and immobility is common, lowers the postoperative complication rate (8,5%), mortality rate (12%) hospital course (means = 24 days) and, last but not least, the total cost of medical care. The biomechanical superiority of these implants over others was shown by comparing moments of inertia, elasticity, bending strength, load capacity and spring constant. In 300 cases of unstable intertrochanteric femoral fractures treated with the 130 degrees-Double-T-Plate, 79% yielded very good to good results, 11% satisfactory results and 10% poor results.