연령대에 따른 근위 대퇴부 및 요추부 골밀도 검사의 상관관계
Correlation Analysis of BMD in Proximal Femur and Spine According to Age
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Objectives: To analogize the test results through analyzing the correlation of bone mineral density (BMD) values between 2 sites (proximal femur and lumbar spine). Materials and Methods: Among the 1557 cases that underwent BMD test on their proximal femur and lumbar spine without history of trauma or disease of the hip or lumbar region, according to their age, they were divided into 4 groups, and the T-score and Z-score of the proximal femur and lumbar spine were each investigated. Results: The correlation figured out through the regression analysis was that, considering the lumbar spine value as the independent variable (L), and the proximal femur value as the dependant variable (H), the T-score was H=0.508×L-0.723 in group 1, H=0.445×L-0.649 in group 2, H=0.363×L-1.124 in group 3 and H=0.404×L-1.467 in group 4. The correlation coefficient of T-score value of the 2 sites of each group was 0.58, 0.59, 0.47, 0.54 each, and which were statistically significant. Z-score was H=0.485xL-0.514 in group 1, H=0.451×L-0.141 in group 2, H=0.390×L-0.401 in group3, L=0.897×H-0.481 in group 4. Conclusion: On the BMD test performed in an age group of over 40 years old, T-score and Z-score each showed significant increase and this is thought to be related to low bone mineral due to bone mineral decrease because of the old age. Also, in cases with lesion in the hip joint or spine, there is a clinical usefulness of analogizing the result of the other region with a result of a single region.
Abstract
Objectives: To analogize the test results through analyzing the correlation of bone mineral density (BMD) values between 2 sites (proximal femur and lumbar spine). Materials and Methods: Among the 1557 cases that underwent BMD test on their proximal femur and lumbar spine without history of trauma or disease of the hip or lumbar region, according to their age, they were divided into 4 groups, and the T-score and Z-score of the proximal femur and lumbar spine were each investigated. Results: The correlation figured out through the regression analysis was that, considering the lumbar spine value as the independent variable (L), and the proximal femur value as the dependant variable (H), the T-score was H=0.508×L-0.723 in group 1, H=0.445×L-0.649 in group 2, H=0.363×L-1.124 in group 3 and H=0.404×L-1.467 in group 4. The correlation coefficient of T-score value of the 2 sites of each group was 0.58, 0.59, 0.47, 0.54 each, and which were statistically significant. Z-score was H=0.485xL-0.514 in group 1, H=0.451×L-0.141 in group 2, H=0.390×L-0.401 in group3, L=0.897×H-0.481 in group 4. Conclusion: On the BMD test performed in an age group of over 40 years old, T-score and Z-score each showed significant increase and this is thought to be related to low bone mineral due to bone mineral decrease because of the old age. Also, in cases with lesion in the hip joint or spine, there is a clinical usefulness of analogizing the result of the other region with a result of a single region.
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