Biomechanical study on pelvic external fixator for the treatment of open book pelvic fractures

Objective:To provide the theoretical basis on selecting optimal fixing direction in the treatment of open book pelvic fracture according to biomechanical comparison in different fixing direction of pelvic external fixator. Methods:The models of open book pelvic fractures were fixed by pelvic external fixator in different fixing direction,which were used for biomechamics determination. Results:When fixing direction of pelvic external fixator was paralleled with the plane of superior aperture of the pelvis, the pelvic stability was a significant difference (P0.05). Conclusion:Fixing direction of the pelvic external fixator in the treatment of open book pelvic fracture was paralleled with the plane of superior aperture of the pelvis,Its fixing effect was the best.