Diagnostic Coincidence of Radiologic Measurement Methods of the Proximal Femur Anterior-posterior Projection for Assessment of Osteoporosis

근위대퇴부 정면 영상을 이용한 골다공증 평가 시 방사선적 계측의 진단일치도

  • Received : 2012.04.10
  • Accepted : 2012.06.07
  • Published : 2012.06.28


The purpose of this study was to determine whether there are relationships between radiologic parameters for osteoporosis by the proximal femur radiograhps and bone mineral density, as assessed by Dual Energy X-ray Absorptiometry(DEXA). Proximal femur anterior-posterior projection were taken from 112 individuals who undergoing DEXA. Radiographic parameters including canal-to-calcar ratio(CCR) and cortical thickness indices(CTI) were measured and compared with bone mineral density($g/cm^2$), T-score. The intramedullary femoral canal width(FW) and calcar width(CW) at osteoporosis group was significantly larger than that of control group. The CCR were correlated negatively with bone mineral density($g/cm^2$)(r=-0.340, p<0.01), and the CTI were correlated positively(r=0.624). The diagnostic accuracy of CCR for osteoporosis was 63.4%, and kappa value was 0.271. And the accuracy of CTI was 67.0%, and kappa value was the level of fair agreement(${\kappa}$=0.258). The proximal femur with large CCR and small CTI had lower T-scores. When evaluating proximal femur anterior-posterior radiographs, those patients with the thinnest femur diaphyseal cortices should be referred for further osteoporosis investigation.


Proximal Femur Anterior-posterior Projection;Canal-to-calcar Ratio;Cortical Thickness Indices;Osteoporosis


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