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目的 通过研究31例青少年强直性脊柱炎(Anky-losing spondylitis,AS)早期年龄、身高、体质量与腰椎_(2～4)骨矿含量(L_(2～4)BMC)、腰椎_(2～4)骨密度(L_(2～4)BMD)之间的关系,初步探讨青少年AS早期骨量变化的重要相关因素。方法 选择男性青少年强直性脊柱炎早期病例31例,获得年龄(A,y)、身高(H,cm)、体质量(W,kg)参数,应用DPX-IQ双能X线骨密度仪(DEXA)检测腰椎_(2～4)骨矿含量(L_(2～4)BMC,g)和骨密度(L_(2～4)BMD=L_(2～4)BMC/面积,g·cm~(-2)),相关和回归分析被用于分析各种不同因素与L_(2～4)BMC、L_(2～4)BMD的关系。结果年龄(A,y)、身高(H,cm)、体质量(W,kg)、L_(2～4)BMC,L_(2～4)BMD统计值分别为(17.56±2.01)y,(168.52±8.59)cm,(56.13±12.72)kg,(41.29±9.59)g,(0.9844±0.1420)g·cm~(-2)。相关和回归分析表明,年龄和身高因素进入L_(2～4)BMC回归方程(R=0.742,Radj~2=0.519,P=0.000<0.05),其中身高因素是L_(2～4)BMC回归方程的关键因素(R=0.673,Radj~2=0.434,P=0.000)。另外,年龄、身高和体质量三因素中只有体质量因素被纳入L_(2～4)BMD回归方程(R=0.620,Radj~2=0.363,P=0.000)。结论 L_(2～4)BMC和L_(2～4)BMD与身高和体质量呈密切正相关(P=0.000,P=0.000)。身高和体质量既成为青少年AS早?
OBJECTIVE To study the effect of early age, height, body mass and bone mineral content of lumbar spine (L_ (2-4)) in lumbar vertebrae (2) in 31 young adults with ankylosing spondylitis (AS) ~ 4) bone mineral density (L_ (2-4) BMD), and to explore the important correlative factors of early osteopenia in adolescent AS. Methods Thirty-one cases of early-onset ankylosing spondylitis in male adolescents were enrolled in this study. The age, height, height and height of the ankylosing spondylitis were measured. The DPX-IQ dual-energy X-ray absorptiometry (DEXA (2 ~ 4) BMC, g) and bone mineral density (L_ (2-4) BMD = L_ (2-4) BMC / area, g · cm ~ -2)). Correlation and regression analysis were used to analyze the relationship between various factors and L_ (2 ~ 4) BMC and L_ (2 ~ 4) BMD. Results The statistics of BMD of age (A, y), height (H, cm), body weight (W, kg) and L_ (2-4) BMC and L_ (2-4) were (17.56 ± 2.01) 168.52 ± 8.59) cm, (56.13 ± 12.72) kg, (41.29 ± 9.59) g and (0.9844 ± 0.1420) g · cm -2, respectively. Correlation and regression analysis showed that the age and height factors entered the L_ (2 ~ 4) BMC regression equation (R = 0.742, Radj ~ 2 = 0.519, P = 0.000 <0.05) The key factors of the equation (R = 0.673, Radj ~ 2 = 0.434, P = 0.000). In addition, only the body mass factors among the three factors of age, height and body mass were included in the L 2 BMD regression equation (R = 0.620, Radj 2 = 0.363, P = 0.000). Conclusion The BMD of L_ (2 ~ 4) BMC and L_ (2 ~ 4) BMD are positively correlated with height and body weight (P = 0.000, P = 0.000). Height and weight of both young adults AS early?