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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part H. Journal of Engineering in Medicine >Predicting the lumbosacral joint centre location from palpable anatomical landmarks
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Predicting the lumbosacral joint centre location from palpable anatomical landmarks

机译：从可触知的解剖标志预测腰s关节中心位置

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摘要

The kinematics of the lumbar spine have previously been described by considering the bearing of the pelvis and lower back. However earlier studies have not described an intersegmental angle measured about a single point; which is necessary for investigation into movement, posture and balance, and lower back pain and injury. This study used computed tomography (CT) scans of 16 pelves to determine the location of palpable bony landmarks, and the junction of the fifth lumbar and first sacral vertebrae within a pelvis axis system. Data were used to derive equations which express the three-dimensional location of the lumbosacral joint centre as an offset from palpable surface landmarks. The magnitude of X, Y, Z offsets was controlled using individual pelvic geometry, and robustness and repeatability of the method was assessed. Regression equations provided the location of the lumbosacral junction to within 8.2mm (±3.4mm) of its true coordinate. Leave-one-out analyses calculated equation coefficients using 15 of the original pelves, with the 16th acting as a control; average errors increased by 6.7 per cent (±0.1 per cent). To the authors' knowledge the current method is the most accurate non-invasive means of locating the lumbosacral junction and may be useful for constructing biomechanical models.
机译：先前已经通过考虑骨盆和下背部的支撑来描述腰椎的运动学。但是，较早的研究并未描述在单个点上测得的节间角。这是调查运动，姿势和平衡以及下背部疼痛和伤害所必需的。这项研究使用16根骨盆的计算机断层扫描（CT）扫描来确定可触及的骨标志物的位置，以及骨盆轴系统内第五个腰椎与第一first骨椎骨的交界处。数据用于导出方程式，该方程式表示腰s关节中心的三维位置，以偏离可触及的表面界标。 X，Y，Z偏移量的大小使用各个骨盆的几何形状进行控制，并评估了该方法的鲁棒性和可重复性。回归方程可将腰s连接处的位置确定在其真实坐标的8.2mm（±3.4mm）以内。留一法使用15个原始骨盆分析计算出的方程系数，第16个作为对照。平均错误增加了6.7％（±0.1％）。据作者所知，当前的方法是定位腰ac关节的最准确的非侵入性方法，可能对构建生物力学模型有用。

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