Abstract: ObjectiveTo compare the efficacy of improved single arm needle external fixator technique and proximal femoral locking plate in treatment of intertrochanteric fracture. Methods92 cases of intertrochanteric fracture patients aged more than 70 were divided into two groups, 49 cases were treated by improved single arm needle external fixator technique, and 43 cases were treated by proximal femur plate locking. There was no significant difference between the two groups in general 单位 P ＞ 0.05). Results92 patients had been followed up during a period of 3 ～ 6 months and the fractures were all healed. According to Harris evaluation criteria, the excellent rates of the improved single arm needle external fixator group and the proximal femur plate locking group reached 89.79％ and 90.69％, respectively, and there was no significant difference 单位 P ＞ 0.05). During the operation, the blood loss and average time of the improved single arm needle external fixator group were less than the proximal femur plate locking group, and there was significant difference 单位 P ＜ 0.05). 2 cases of the infection occurred in the improved single arm needle external fixator group, and 4 cases occurred in the proximal femur plate locking group. ConclusionThe improved single arm needle external fixator technique is fit for old and weak patients, which has the properties of reliable fixation, early walking with crutches, short operation time, less blood loss and without reoperation for fixation. Meanwhile, the proximal femur plate locking is suitable for various types of non－serious complications patients with intertrochanteric fractures.

Key words: improved needle, intertrochanteric fracture, proximal femur plate locking, external fixation