激光投射法测量股骨颈扭转角及前倾角

Measurement of the femoral neck torsion angle and anteversion angle by laser projection method

目的通过裸骨观察及设计激光投射法测量股骨颈扭转角及前倾角,探讨激光投射法测量的可行性。方法裸骨观察描述股骨颈扭转角及前倾角,设计股骨颈扭转角前倾角测量装置,分两次用激光投射法测量60个股骨标本,对测定值进行统计学分析,并作左右两侧比较。结果对裸骨标本直接观察可以看出股骨颈扭转角与前倾角区别,采用激光投射法分两次测量所得数据差异无显著意义(统计学把握度为100%,P>0.05)。测定股骨颈前倾角左侧13.58°±6.55°,右侧12.15°±5.83°;股骨颈扭转角左侧18.50°±7.38°,右侧19.08°±8.59°,双侧两角度差异无显著性(P>0.05)。结论激光投射法是测量股骨颈扭转角及前倾角有效的方法,具有良好的可重复性。

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 .