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Measurement of the femoral neck torsion angle and anteversion angle by laser projection method
ZHU Qiu-liang* XU Bing SHEN Liang-hua ZHAO Li-lai YAN Mao-hua WANG Yuan-long ZHANG Ying
Acta Anatomica Sinica ›› 2014, Vol. 45 ›› Issue (5) : 694-697.
Measurement of the femoral neck torsion angle and anteversion angle by laser projection method
Objective To investigate the feasibility of measuring femoral neck torsion angle and anteversion angle by laser projection method. Methods The femoral neck torsion angle and anteversion were observed and described. An angle measuring device was designed and produced. With the device, the femoral torsion angle and anteversion angle were measured by laser projection method two times. Statistical analysis was performed on the measured value, and sides difference. Results The differences between femoral neck torsion angle and anteversion angle were observed. There was no significant difference (P> 0.05, power=100%) between the two measurements by laser projection method. Measurements of the femoral anteversion were 13.58 °±6.55 ° on the left side, and 12.15 °±5.83 °on the right side. Measurements of the femoral neck torsion angle were 18.50 °±7.38 ° on the left and 19.08 °±8.59 ° on the right. There was no significant difference between left and right side (P > 0.05). Conclusion The laser projection method is the effective method in measuring femoral neck torsion angle and anteversion angle, and has excellent repeatability.
femoral / femoral neck torsion angle / femoral anteversion angle / laser projection method / measure
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