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Abstract Objective To analyze the clinical efficacy of 3D print fracture model and bridgelink internal fixation system for complex acetabular fracture.Methods 92 patients with complex acetabular fracturewere enrolled in the study in People's Hospital of Chengyang District from February 2015 to February 2017.The patients were treated with routine surgical approach.46 patients were randomly selectedwith 3D print fracture model before operation and bridge-link internal fixation system(3D group) andthe other 46 patients (Traditional group) were treated with traditional treatment.The operation related indexes，fracture reduction，hip joint function and complications of two groups werecompared.Results Compared with the traditional group，the time of operation was shorter，less bleeding in the operation，less flow rate after operation and short hospitalization time in group 3D(P＜0.05).Immediately after surgery，the fracture reduction was evaluated.The total resetting satisfaction of the two groups was high，the 3D group was slightly higher than the traditional group，but there was no significant difference(P＞0.05).6 months after surgery，in the three aspects of pain，movement amplitude and walking ability，3D group were slightly higher than the traditional group，but the difference was not statistically significant(P＞0.05)，but the difference was statistically significant on the total score(P＜0.05).6 months after surgery，the total incidence of group 3D was 4.35%，which was slightly lower than that of the traditional group 13.04%(P＞0.05).Conclusion The 3D printing techniquewith bridgelink internal fixation system oncomplex acetabular fracture before operation can shorten the time of operation，reduce the amount of blood loss and help the patient to recover quickly.
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