Application of bone density measured by X-ray absorptiometry and femoral neck geometric parameters in the evaluation of femoral structures in elderly patients at different altitudes(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2020年第4期
- Page:
- 520-523
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Application of bone density measured by X-ray absorptiometry and femoral neck geometric parameters in the evaluation of femoral structures in elderly patients at different altitudes
- Author(s):
- LI Guohai1; ZHANG Xinrong1; HAN Li1; LI Linchang1; MA Zhanlong2
- 1. Department of Radiology, Qinghai University Affiliated Hospital, Xining 810001, China; 2. Department of Radiology, Jiangsu Province Hospital, Nanjing 210000, China
- Keywords:
- Keywords: the elderly; bone density; femoral neck geometric parameter; osteoporosis
- PACS:
- R816.8；R318.01
- DOI:
- DOI:10.3969/j.issn.1005-202X.2020.04.022
- Abstract:
- Abstract: Objective To explore the value of bone density measured by X-ray absorptiometry and femoral neck (FN) geometric parameters in the evaluation of femoral structures in the elderly at different altitudes. Methods The bone density measured by double-energy X-ray absorptiometry and the corresponding T values of the elderly in plain and plateau areas were analyzed, and the relevant FN geometric parameters were also collected. FN geometric parameters included outer diameter (OD), cross-sectional area (CSA), endocortical diameter (ED), average cortical thickness (CT), buckling ratio (BR), section modulus (SM), cross-sectional moment of inertia (CSMI) and compressive strength index (CSI) of the midpoint of FN axis. According to different altitudes, the elderly were divided into plateau group and plain group, and the relationship between physiological data of the two groups of patients was statistically analyzed. Results [①] The numbers and proportions of normal bone, bone loss and osteoporosis in plateau group were 120(24.0%), 263(52.6%) and 117(23.4%), respectively, and the bone mineral density was (0.643±0.124) g/cm2. Those in plain group were 118(23.6%), 272(54.4%) and 110 (22.0%), respectively, and the bone mineral density was (0.664±0.117) g/cm2. There were statistical differences between two groups (P<0.05). [②]The comparison of FN geometric parameters between plateau group and plain group showed that there were significant differences in FN-CT, FN-ED, FN-CSMI and FN-CSI (P<0.05), but not in FN-OD, FN-CSA, FN-BR and FN-SM (P>0.05). Conclusion The bone density measured by X-ray absorptiometry and FN geometric parameters have certain value in evaluating the femoral structure in elderly patients at different altitudes. There is a certain relationship between bone density of the elderly and some FN geometric parameters (FN-CT, FN-ED, FN-CSMI and FN-CSI), which provide significant reference for the evaluation of the femoral structure in elderly patients, worthy of further clinical research.
Last Update: 2020-04-29