老年女性跟骨超声参数与股骨近端生物力学的相关性

Correlation between ultrasound parameters of calcaneus and biomechanics of proximal femoral in elderly women

  • 摘要: 目的 探讨老年女性跟骨超声参数与股骨近端生物力学性质的相关性。 方法 连续纳入2014年1 - 6月就诊于我院骨科的老年女性股骨颈骨折患者34例,均行髋关节置换术、跟骨定量超声(quantitative ultrasound,QUS)、股骨头负重区骨松质行定量计算机断层扫描(quantitative computed tomography,QCT)及生物力学测试,探讨上述检测结果相关程度。 结果 跟骨超声传播速度(speed of sound,SOS)、超声振幅衰减平均值(broadband ultrasound attenuatio,BUA)及跟骨超声骨密度(Est.BMD)与负重区骨松质密度(QCT-BMD)均呈正相关(r=0.411,P< 0.05;r=0.366,P< 0.05;r=0.495,P< 0.01)。跟骨硬度指数(Stiffness)及负重区骨松质杨氏模量(Young's Modulus)与负重区骨松质QCT-BMD均呈正相关(r=0.490,P< 0.01;r=0.483,P< 0.01)。跟骨Stiffness与负重区骨松质Young's Modulus呈正相关(r=0.418,P< 0.05)。 结论 老年女性跟骨定量超声检测参数Stiffness在一定程度上可以反映出股骨近端生物力学特性,对预测老年女性骨质疏松患者股骨近端骨折风险有一定价值。

     

    Abstract: Objective To discuss the correlation between quantitative ultrasound parameters of calcaneus and biomechanical properties of proximal femoral in elderly women. Methods Thirty-four elderly women with femoral neck fracture admitted to department of orthopaedics in Chinese PLA General Hospital from January 2014 to June 2014 were enrolled. All patients had undergone total hip replacement surgery and the quantitative ultrasound (QUS) of calcaneus. The weight-bearing area of cancellous bone in femoral head after total hip replacement was measured by quantitative computed tomography (QCT) and biomechanical test. The relevance of the above test results was explored. Results Speed of sound (SOS), broadband ultrasound attenuation (BUA)and bone mineral density (BMD) of calcaneus were positively correlated with BMD of weight-bearing area of cancellous bone(r=0.411, P< 0.05; r=0.366, P< 0.05; r=0.495, P< 0.01). Calcaneus stiffness index and Young's Modulus of weight-bearing area of cancellous bone were correlated with BMD of weight-bearing area of cancellous bone (r=0.490, P< 0.01; r=0.483, P< 0.01).Stiffness and Young's Modulus were positively correlated (r=0.418, P< 0.05). Conclusion Stiffness of calcaneus quantitative ultrasound parameters can reflect proximal femoral biomechanics in some extent in elderly women, which has a reference value to prognosis osteoporosis of the proximal femoral fracture in elderly women.

     

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