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目的探讨女性颈椎骨密度与腰椎骨密度的差异及相关性。方法对46名女性志愿者于同一天行颈椎及腰椎定量CT(QCT)扫描,记录各椎体骨密度数据。分别应用配对样本t检验及Pearson相关分析比较颈椎与腰椎平均骨密度的差异及相关性;采用方差分析比较各椎体骨密度均数,采用LSD法进行组间的两两比较。结果颈椎平均骨密度为(281.81±76.13)mg/cm3,腰椎为(147.49±39.65)mg/cm3,二者差异有统计学意义(t=19.462,P<0.001)。颈椎与腰椎平均骨密度的相关性高(r=0.86,P<0.001)。结论女性颈椎平均骨密度高于腰椎,并与腰椎平均骨密度相关性高。
Objective To investigate the differences and correlations between cervical vertebral bone mineral density and lumbar vertebral bone mineral density in female. Methods 46 female volunteers underwent CT scan of cervical and lumbar vertebrae on the same day, and the bone density data of each vertebra were recorded. The paired sample t-test and Pearson correlation analysis were used to compare the differences of BMD between cervical vertebrae and lumbar vertebrae. The variance analysis was used to compare the BMD of vertebrae and LSD method. Results The average BMD of cervical spondylosis was (281.81 ± 76.13) mg / cm3 and that of lumbar vertebra was (147.49 ± 39.65) mg / cm3. There was a significant difference between the two groups (t = 19.462, P <0.001). Cervical spine and lumbar average bone mineral density correlation (r = 0.86, P <0.001). Conclusion The average cervical bone density of female patients is higher than that of lumbar spine, which is correlated with the average BMD of lumbar spine.