RESUMEN
[Objective]To investigate the effect of proximal femoral intramedullary nail with spiral blade for the treatment of femoral peritrochanteric fractures with femoral shaft fractures.[Method]From January 2002 to October 2006,21 patients of femoral peritrochanteric fractures with femoral shaft fractures were treated by minimal invasive technique with proximal femoral intramedullary nail and spiral blade.[Result]All 21 patients were followed up from 9 months to 5 years,with an average of 13 months,fractures healed in all patients.There was no nail and screw broken or loosening.The hip and knee joints of ingived limbs retained good function.[Conclusion]It is a good internal fixation operation for treatment of femoral peritrochanteric fractures with femoral shaft fractures(according to the patient's age,the type of fracture and the Singh index of the bone)by using minimal invasive technique with proximal femoral intramedullary nail and spiral blade,the key of treatment is the anatomic reduction of the fractures under minimal invasive surgery.