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Application of Fine Tuning Diopter Calibration Center Positioning Rod Method in the Insertion of the Distal Screws in Interlocking Intramedullary Nailing of Femoral Shaft Fractures

Objective To evaluate the clinical efficacy of fine tuning diopter calibration center positioning rod method in the insertion of the distal screws in interlocking intramedullary nailing of femoral shaft fractures. Methods Seventy cases with femoral shaft fractures treated by interlocking intramedullary nails fixation in our hospital from June 2011 to June 2013 were selected and divided into the study group and the control group with 35 cases in each. Patients in the study group were treated by distal intramedullary nails interlocking with fine tuning diopter calibration center positioning rod method,and those in the control group were treated by distal intramedullary nails interlocking under X-ray after they failed the interlocking with traditional method. And the surgical effect of the two groups was compared. Results Compared with the control group, the study group had higher one-time success rate of locking(94.29% vs 14.29%), shorter duration of procedure[(55±10.27)min vs(84±18.48)min], less intraoperative X-ray quantity[(0.011±0.002)m R/hr vs(1.119±0.028)m R/hr]. Conclusion Insertion of the distal screws in interlocking intramedullary nailing of femoral shaft fractures with fine tuning diopter calibration center positioning rod method has the advantages of simple operation, short time of locking with high success rate and little damage to the patients, so it is worthy of clinical promotion