撬拨复位结合机器人导航下空心螺钉内固定治疗难复性股骨颈骨折的疗效观察

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Abstract Objective To discuss the effect of fixation with percutaneouscannulated screws assisted by robot navigation and poking reduction technique for femoral neck fractures.Methods From May 2013 to June 2015，13 patients with femoral neck fracture were treated by internal fixation with percutaneouscannulated screws assisted by robot navigation and poking reduction technique.Record the operation time，X-ray fluoroscopy time，blood loss，total drilling times，the parallel degree of screws，the healing rate of fractures，the Harris scores of all patients.Results All patients were followed up for 12～25 months with an average of (18.6±6.6)months.Average operation time was(92.2±6.7)min.Average frequency of guide pin insertion was (5.2±1.2)times，X-ray fluoroscopy time was (16.1±4.1)s，blood loss was (10.1±2.1)mL.Garden index was (173.3±8.3)°in AP view and (171.1±11.1)°in the lateral.The X ray showed that the fracture healing rate was 100 percent.The verage healing time was (5.8±1.3) months，Postoperative Harris hip score was (86.9±5.1).The latest follow-up revealeds that none nonunion of fracture or femoral head necrosis was founded in the all patients.Conclusion Cannulated screw fixation assisted by robot navigation and poking reduction technique has high clinical application value.Which lead to more accurate positioning，better hip function ，less surgical trauma and X-ray exposure times.It is a good method to treat femoral neck fractures.

Key words： poking reduction technique robot navigation femoral neck fracture cannulated screw internal fixation

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