Reliability of the Radiologic Measurement Methods for Assessment of Osteoporosis Using the Digital Hip Radiograph.
10.5371/jkhs.2011.23.2.142
- Author:
Ho Hyun YUN
1
;
Ju Won YI
;
Deuk Soo LIM
;
Sung Chul PARK
;
Seong Rok OH
Author Information
1. Department of Orthopedic Surgery, Seoul Veterans Hospital, Seoul, Korea. yun8813@paran.com
- Publication Type:Original Article
- Keywords:
Hip;
Hip fracture;
Osteoporosis;
Radiographic parameter;
Digital radiograph
- MeSH:
Absorptiometry, Photon;
Aged;
Bone Density;
Hip;
Humans;
Osteoporosis;
Referral and Consultation;
ROC Curve;
Sensitivity and Specificity
- From:Journal of the Korean Hip Society
2011;23(2):142-150
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: We evaluated the usefulness of radiographic parameters for osteoporosis by analyzing the results of radiographic parameters determined by digital hip radiographs and bone mineral density T-scores, as assessed by Dual Energy X-ray Absorptiometry (DEXA). MATERIALS AND METHODS: The authors reviewed 100 subjects in the hip fracture group and 50 in the non-fracture control group. Digital hip radiographs were assessed to determine the values of Singh index, Canal-to-Calcar Ratio, and Cortical Thickness Index (CTI). Bone mineral density was assessed by DEXA. RESULTS: Intraclass Correlation Coefficient (ICC) results of the CTI were above 0.8 in the fracture group. Compared to the control group, the fracture group showed higher ICCs. Interobserver ICCs were especially lower in the control group. There were statistically significant correlations between CTI and DEXA (r=0.50~0.58, p<0.05). In the analysis of ROC curves, a mean threshold for CTI set a value of 0.54 (0.53~0.55), and mean sensitivity and specificity were 75.5% (69~79%) and 67.8% (65~78%), respectively. CONCLUSION: CTI showed reasonable reliability and correlation with DEXA results. CTI was a useful radiographic parameter to alert the surgeon to recommend referral for osteoporosis evaluation in elderly hip fracture patients.
