Aguado-Henche Soledad, Morante-Martínez Pascual, Cristóbal-Aguado Soledad, Clemente de Arriba Celia
Teaching Unit of Human Anatomy and Embryology, Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, Ctra. Madrid-Barcelona - Km 33600, 28805, Alcalá de Henares, Madrid, Spain.
National Health System, "La Paz" University Hospital, Madrid, Spain.
Eur J Orthop Surg Traumatol. 2019 Feb;29(2):389-396. doi: 10.1007/s00590-018-2311-y. Epub 2018 Sep 15.
This study has been undertaken in order to describe the bone mass distribution of the dry human radius via dual x-ray absorptiometry (DXA) with a Norland XR-800 densitometer machine. A sample of 39 dry radius bones was used. Two projections were made: antero-posterior and lateral, and five regions of interest were selected. The bone densities and the bone mineral contents of the various regions of the radius in the two projections were compared using Student's t tests for paired samples, with statistically significant differences being found in all of the values, except in the proximal extremity (P Ext). The area of greatest bone mineral content (BMC) was the medial diaphysis (M Diaph), followed by the distal extremity (D Ext), with the lowest value being found in the proximal extremity (P Ext). As for bone mineral density (BMD), a great symmetry is observed if we take the mean point of the longitudinal axis as a reference, with it being distributed from highest to lowest from the central part to the extremities. A correlation study of the BMD and BMC values between the segments themselves and with the total, in both positions, provides us with a high correlation (p ≤ 0.01), with the highest correlation value being found for the proximal diaphysis (P Diaph) region, indicating the heterogeneous nature of the distribution of the radius bone mass. Bone densitometry via DXA is useful in order to establish an overview of the structural construction of the human radius.
本研究旨在通过使用Norland XR - 800骨密度仪的双能X线吸收法(DXA)来描述干燥人体桡骨的骨量分布。使用了39根干燥桡骨样本。进行了两个投影:前后位和侧位,并选择了五个感兴趣区域。使用配对样本的学生t检验比较了两个投影中桡骨各个区域的骨密度和骨矿物质含量,发现除近端(P Ext)外,所有值均存在统计学显著差异。骨矿物质含量(BMC)最高的区域是内侧骨干(M Diaph),其次是远端(D Ext),最低值出现在近端(P Ext)。至于骨矿物质密度(BMD),如果以纵轴的中点为参考,可以观察到很大的对称性,其从中心部分到两端从高到低分布。对两个位置的各节段自身以及与总体的BMD和BMC值进行的相关性研究显示出高度相关性(p≤0.01),近端骨干(P Diaph)区域的相关性值最高,表明桡骨骨量分布具有异质性。通过DXA进行骨密度测定有助于建立人体桡骨结构构成的概况。